Class Central

Rankings
Collections

Subjects

View all

Computer Science
Health & Medicine
Mathematics
Business
Humanities
Engineering
Science
Education & Teaching
Social Sciences
Art & Design
Artificial Intelligence
Data Science
Programming
Personal Development
Information Security (InfoSec)

View all Subjects

Universities
The Report

Courses from 1000+ universities

Rankings

Best Courses

Best of All Time
Best of the Year

Most Popular Courses

Most Popular of All Time
Most Popular of the Year

Collections

Computer Science

Algorithms and Data Structures
Internet of Things
Information Technology
Computer Networking
Machine Learning
DevOps
Deep Learning
Cryptography
Quantum Computing
Human-Computer Interaction (HCI)
Distributed Systems
Blockchain Development
Operating Systems
Computer Graphics
Automata Theory
Compilers
SCADA
Mainframe
Digital Image Processing
Computational Models
View all Computer Science

Health & Medicine

Nutrition & Wellness
Disease & Disorders
Public Health
Health Care
Nursing
Anatomy
Veterinary Science
Continuing Medical Education (CME)
Blood Pressure
Wellbeing
Women's Health
Dysphagia
Occupational Therapy
Hygiene
Healthcare Innovation
Music Therapy
Holistic Health
Ayurveda
Herbalism
Massage Therapy
View all Health & Medicine

Mathematics

Statistics & Probability
Foundations of Mathematics
Calculus
Discrete Mathematics
Trigonometry
Geometry
Algebra
Precalculus
Number Theory
Combinatorics
Mathematical logic
Linear Programming
Graph Theory
Set Theory
Group Theory
Differential Equations
Polynomials
Integration
Mathematical Analysis
Mathematical Thinking
View all Mathematics

Business

Management & Leadership
Finance
Entrepreneurship
Marketing
Strategic Management
Industry Specific
Business Intelligence
Accounting
Human Resources
Project Management
Sales
Design Thinking
Business Software
Customer Service
Nonprofit Management
Innovation
Operations Management
Corporate Governance
Business Plan
Business Proposal
View all Business

Humanities

History
Literature
Language Learning
Grammar & Writing
Philosophy
Religion
ESL
Culture
Sports
Journalism
Ethics
Linguistics
Food
Library Science
Reading
Crisis Management
Games
Emergency Management
Performing Arts
Religious Studies
View all Humanities

Engineering

Electrical Engineering
Mechanical Engineering
Civil Engineering
Robotics
Nanotechnology
GIS
Textiles
Manufacturing
BIM
CAD
Chemical Engineering
Energy Systems
Aerospace Engineering
Finite Element Analysis
Geotechnical Engineering
Reliability Engineering
Petroleum Engineering
Control Theory
Environmental Engineering
Energy Conversion
View all Engineering

Science

Chemistry
Physics
Environmental Science
Astronomy
Biology
Agriculture
Materials Science
Earth Science
Applied Science
Forensic Science
Meteorology
Horology
Paleontology
Fire Science
Sensory Science
Ergonomics
Physical Sciences
Complex Systems
Scientific Method
Medicine
View all Science

Education & Teaching

K12
Higher Education
STEM
Teacher Professional Development
Course Development
Online Education
Pedagogy
Social-emotional Learning (SEL)
Instructional Design
Homeschooling
Special Education
Adult Education
Course Design
Online Learning
Educational Technology
Curriculum Development
Next Generation Science Standards
Student-Centered Learning
Student Engagement
Classroom Management
View all Education & Teaching

Social Sciences

Sociology
Economics
Psychology
Anthropology
Political Science
Law
Urban Planning
Human Rights
Sustainability
Governance
Archaeology
Social Work
Early Childhood Development
Structural Equation Modeling
Cultural Studies
Research Methods
Community Engagement
Philanthropy
Behavioral Science
Media Studies
View all Social Sciences

Art & Design

Music
Digital Media
Visual Arts
Design & Creativity
Photography
Art Therapy
Art Composition
Character Design
Fashion Design
Inspiration
Golden Ratio
Pattern Design
Geometric Patterns
Copic Markers
Jewelry Design
Animal Illustration
Anime Drawing
Street Art
Observational Drawing
Greeting Cards
View all Art & Design

Artificial Intelligence

Computer Vision
Natural Language Processing (NLP)
Neural Networks
Autonomous Vehicles
Chatbot
IBM Watson
Generative AI
Intelligent Systems
Genetic Algorithms
Intelligence
Heuristics
Ontology
Collective Intelligence
Autonomous Agents
Constraint Programming
AI Ethics
Semantics
Computational Linguistics
Computational Creativity
Evolutionary Algorithms
View all Artificial Intelligence

Data Science

Bioinformatics
Big Data
Data Mining
Data Analysis
Data Visualization
Jupyter Notebooks
Process Mining
Stata
Text Mining
Social Network Analysis
Computational Analysis
Data Collection
Information Retrieval
Data Processing
Data Wrangling
Data Extraction
Data Manipulation
Monte Carlo Simulation
Network Analysis
Data Preparation
View all Data Science

Programming

Mobile Development
Web Development
Databases
Game Development
Programming Languages
Software Development
Cloud Computing
Domain-Specific Languages (DSL)
Hardware Description Languages (HDL)
Aspect-oriented programming
Object-oriented programming
Visual Programming
Competitive Programming
Database Programming
Generic Programming
Programming Language Development
Leetcode
GNU Toolchain
Windsurf
Vibe Coding
View all Programming

Personal Development

Communication Skills
Career Development
Self Improvement
Presentation Skills
Resilience
Self-Control
Creativity
Gratitude
Growth Mindset
Self-Assessment
Survival Skills
Sleep Improvement
Career Planning
Empowerment
Generosity
Personal Growth
Courage
Humility
Social Skills
Dog Training
View all Personal Development

Information Security (InfoSec)

Cybersecurity
Network Security
Ethical Hacking
Digital Forensics
Reverse Engineering
Penetration Testing
Malware Analysis
DevSecOps
OSINT (Open Source Intelligence)
Threat Intelligence
Red Team
Blue Team
View all Information Security (InfoSec)

The Series Finale of Online Education: Coursera Acquires Udemy

$7.2 billion in combined revenue since 2020. $8 billion in lost market value. This merger marks the end of an era in online education.

Dhawal Shah Feb 11, 2026

Latest

9 Best Delphi Courses for 2026: Effortless Cross-Platform GUIs
8 Best Anthropology Courses for 2026: Understanding Cultures
10 Best CSS Animation Courses for 2026: Bring HTML to Life
9 Best Bug Bounty Courses for 2026: Ethical Hacking, Safer Web
UpGrad to Acquire Unacademy, Once a $3.5B Unicorn, in a Share Swap Deal

Write for The Report

Visit The Report

600 Free Google Certifications
Trending

Most common

Popular subjects

Computer Science
53,590 courses
Psychology
3,093 courses
Microsoft Excel
2,254 courses

Popular courses

Lean Production
edX
Viruses & How to Beat Them: Cells, Immunity, Vaccines
Tel Aviv University
Learn Like a Pro: Science-Based Tools to Become Better at Anything
edX

Organize and share your learning with Class Central Lists.

View our Lists Showcase

Sign up

Log in or Sign up

Log in
Sign up

Subjects
Science
Applied Science
Welding
GTAW

Free Online

GTAW Courses and Certifications

Master TIG welding (GTAW) techniques for precise, high-quality joints on pipes and metals. Learn troubleshooting, welding symbols, and advanced methods like walking the cup through hands-on tutorials from experts on YouTube, Udemy, and Coursera. Ideal for beginners and aspiring welding professionals.

17 courses

Related Subjects

Welding Courses
TIG Welding Courses
Metallurgy Courses
Quality Control Courses

Showing 17 courses

Sort by Relevancy

Filter by

Filters

1. With certificate (2)
2. Free course (15)
3. University course only (1)
Level
1. Intermediate (7)
2. Advanced (5)
3. Beginner (3)
Duration
1. < 30 mins (12)
2. 30 - 60 mins (2)
3. 2 - 5 hours (1)
4. 5 - 10 hours (1)
5. 10+ hours (1)
Language
1. English (17)

Weld.com
TIG Welding 101: Introduction to GTAW - Basics and Troubleshooting
2 reviews

Comprehensive introduction to TIG welding, covering equipment setup, torch manipulation, arc striking, and filler material usage. Includes troubleshooting tips and common mistakes to avoid.
- YouTube
- 39 minutes
- On-Demand
- Free Video
WeldTube
6G Pipe TIG Welding - GTAW Techniques and Competition

Demonstración de soldadura TIG en tubería 6G, comparando técnicas de copa y mano libre. Incluye consejos y trucos para mejorar habilidades de soldadura.
- YouTube
- 15 minutes
- On-Demand
- Free Video
Weld.com
Pro Tips for TIG Welding Socket Welds - Complete GTAW Walkthrough

Master the complete process of TIG welding socket welds with expert guidance on preparation, fitting, and execution of 2F and 5F welds while learning to avoid common mistakes in this detailed walkthrough.
- YouTube
- 24 minutes
- On-Demand
- Free Video
Welding Engineering
15 reviews

This 40 video lecture series would discuss the manufacturing and the joining techniques.
- YouTube
- 1 day 12 hours
- On-Demand
- Free Video
Understanding Welding Symbols
701 ratings at Udemy

How to Create and Interpret the Graphical Symbols Used to Define a Welded Joint
- Udemy
- 3 hours 12 minutes
- On-Demand
- Paid Course
L&T EduTech
Welding Processes in Heavy Manufacturing & Quality Controls
24 ratings at Coursera

Explore welding processes, special techniques, and quality control in heavy manufacturing. Learn advanced methods, post-weld treatments, and IoT integration for optimal productivity and reliability in industrial operations.
- Coursera
- 8 hours 11 minutes
- On-Demand
- Paid Course
Weld.com
How to TIG Weld Bad Fitup with Large Gaps on Pipe

Learn TIG welding techniques for handling poor fit-ups, large gaps, and misalignments on pipes. Master skills to overcome challenging welding scenarios and produce high-quality joints.
- YouTube
- 17 minutes
- On-Demand
- Free Video
Weld.com
TIG Welding Techniques - Comparing Laywire and Dabbing Methods

Master essential TIG welding techniques - laywire and dabbing methods - with hands-on demonstrations using different filler wire sizes. Compare approaches and learn optimal applications for stronger, more precise welds.
- YouTube
- 14 minutes
- On-Demand
- Free Video
TimWelds
5 Types of Welding Explained - MIG, TIG, Stick, Flux Core and Oxy Acetylene

Discover the fundamentals of 5 essential welding techniques: MIG, TIG, Stick, Flux Core, and Oxy Acetylene, with clear explanations of their differences and applications.
- YouTube
- 15 minutes
- On-Demand
- Free Video
Weld.com
Avoiding Metal Distortion in TIG Welding Different Metals

Master techniques to prevent metal distortion during TIG welding of stainless steel, carbon steel, and aluminum using laser tracking methods and proper machine settings for optimal results.
- YouTube
- 13 minutes
- On-Demand
- Free Video
Weld.com
Testing at a Welding Lab - Adult Welding Competition Experience

Experience a welding competition firsthand, from preparation to execution. Learn about essential tools, facility setup, and various welding techniques as competitors showcase their skills in different challenges.
- YouTube
- 32 minutes
- On-Demand
- Free Video
Weld.com
TIG Welding Techniques for Preventing Stainless Steel Nozzle Distortion

Master essential TIG welding techniques for stainless steel nozzles, from precise layout and fitting to preventing distortion through strategic welding sequences and proper temperature control.
- YouTube
- 22 minutes
- On-Demand
- Free Video
Weld.com
TIG Welding - Walking the Cup Technique for Perfect Welds

Master the "walking the cup" TIG welding technique to create smooth, consistent beads across different positions, from flat to pipe welding, with professional guidance on proper equipment setup and positioning.
- YouTube
- 22 minutes
- On-Demand
- Free Video
Weld.com
5G Pipe Welding - Step-by-Step TIG Backfeeding Guide

Master essential TIG backfeeding techniques for 5G pipe welding, including side and top feeding methods to prevent low spots and achieve proper reinforcement in root passes.
- YouTube
- 17 minutes
- On-Demand
- Free Video
Weld.com
Solving 5G Root Pass Defects: A Field Guide to TIG Techniques

Master TIG welding techniques to prevent common 5G root pass defects, including suckback, cold wire, excessive reinforcement, and lack of fusion, with practical demonstrations and expert tips for professional pipe welding results.
- YouTube
- 17 minutes
- On-Demand
- Free Video

Browse by subject

Computer Science
Psychology
Cybersecurity
Health
Law
Accounting
Web Development

Browse by provider

Coursera
Udacity
edX
Noble Desktop
freeCodeCamp
CodeSignal
Boot.dev

Browse by university

Harvard
MIT
Georgia Tech
University of Michigan
Purdue University
Duke University
IIT Madras

Browse by institution

Google
Microsoft
IBM
Amazon
Linux Foundation
British Council
Salesforce

Best Online Courses of All Time
Best Online Courses of the Year
Most Popular Courses of All Time
Most Popular Courses of the Year
100 Top FREE Coursera Courses of All Time
Best Courses Guides
Free Printable Study Calendar

The Report by Class Central RSS Feed

The "New Normal" that Wasn't
DDoS Attack on Class Central
2000+ Online Degrees in India
Harvard's CS50 Free Certificate Guide
How Open University Works

Free Certificates & Courses

450+ Free Google Certificates
10000+ Free Courses from Tech Giants
300+ Free Coursera Courses
Ivy League Online Courses
200+ Free Writing Online Courses

About Class Central

Class Central aggregates courses from many providers to help you find the best courses on almost any subject, wherever they exist.

Facebook
Twitter
LinkedIn
YouTube
Bluesky

Class Central © 2011-2026 Privacy Policy

About Us
Join Us
Write for Us
Help Center
Contact Us

Share

Facebook
Twitter
Bluesky
Email

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free

Someone learning on their laptop while sitting on the floor.