Class Central

Rankings
Career Certificates

Subjects

View all

Technology
Business
Creative
STEM
Health & Wellness
People & Society
Personal Growth & Lifestyle

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

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
View all Career Certificates

Technology

Computer Science
Artificial Intelligence
Data Science
Web Development
Programming
Databases
IT & Networking
DevOps
UX/UI Design
Blockchain & Cryptocurrency
Extended Reality (XR)
Generative AI
Cloud Computing
Cybersecurity
Game Development
Product Management
View all Technology

Business

Management & Leadership
Finance
Entrepreneurship
Marketing
Strategic Management
Project Management
Sales
Business Software
Real Estate
Professional Development
Accounting
Supply Chain Management
Business Strategy
Human Resources
View all Business

Creative

Music
Digital Media
Visual Arts
Design
Crafts
Performing Arts
AI Art
View all Creative

STEM

Mathematics
Engineering
Science
Statistics & Probability
Chemistry
Physics
Environmental Science
Astronomy
Biology
Agriculture
View all STEM

Health & Wellness

Disease & Disorders
Public Health
Health Care
Nursing
Mental Health
Continuing Medical Education (CME)
Medicine
Wellness
Nutrition
View all Health & Wellness

People & Society

Humanities
Education & Teaching
Social Sciences
History
Literature
Sociology
Economics
Psychology
Anthropology
Political Science
Law
Language Learning
Writing
Philosophy
Religion
View all People & Society

Personal Growth & Lifestyle

Personal Development
Sports & Recreation
Personal Finance
Parenting & Family
Food & Drink
Self-Defense & Martial Arts
Gardening
Productivity & Time Management
Games
Study Skills
Travel
Pets & Pet Care
Beauty & Makeup
Home & Living
Critical Thinking
View all Personal Growth & Lifestyle

Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

Dhawal Shah Sep 03, 2026

Latest

[2026] 17% of Coursera Courses Have Peer Reviews: Here Are the Best
7 Best Online First Aid Courses and Sites for 2026: CPR, AED, and Emergency Response
7 Best Node.js Courses in 2026: Build APIs in JavaScript
12 Best Data Analysis Courses for 2026: From Data to Insights
Coursera’s Hidden Free-Access Courses (and What’s Actually Free About Them)

Write for The Report

Visit The Report

600 Free Google Certifications
Trending

Most common

Popular subjects

Artificial Intelligence
17,507 courses
Data Science
11,440 courses
Cybersecurity
14,270 courses

Popular courses

L'Italiano nel mondo
University of Naples Federico II
Introduction to HTML5
University of Michigan
Umano Digitale
University of Urbino

Organize and share your learning with Class Central Lists.

View our Lists Showcase

Sign up

Log in or Sign up

Log in
Sign up

Institutions
Paul Bolin, M.D.

Free Online

Paul Bolin, M.D. Courses

237 courses

Showing 237 courses

Sort by Relevancy

Filter by

Filters

1. Free course (237)
Level
1. Intermediate (75)
2. Advanced (162)
Duration
1. < 30 mins (196)
2. 30 - 60 mins (26)
3. 1 - 2 hours (15)
Subject
1. Health & Wellness (227)
2. Test Prep (13)
3. STEM (10)
Language
1. English (237)

First Trimester Bleeding and Miscarriage - Medical Review
2 ratings

Learn about first trimester bleeding and miscarriage, including workup, management, and complications. Explore ectopic and molar pregnancies, and understand key considerations for medical professionals.
- YouTube
- 19 minutes
- Self-Paced
- Free Video
Sickle Cell Disease - CRASH! Medical Review Series
2 ratings

Learn about sickle cell disease pathophysiology, diagnosis, complications, and management in this concise medical review for healthcare professionals and students.
- YouTube
- 17 minutes
- Self-Paced
- Free Video
Psychiatry Review Questions - Part 9
1 rating

Master psychiatry concepts through targeted review questions designed for medical licensing exam preparation and clinical knowledge reinforcement.
- YouTube
- 48 minutes
- Self-Paced
- Free Video
Disorders of the Esophagus - CRASH! Medical Review Series
1 rating

Explore key esophageal disorders, their symptoms, diagnosis, and treatment options in this concise medical review for physicians and medical students.
- YouTube
- 22 minutes
- Self-Paced
- Free Video
Hemophilia - Medical Review
1 rating

Learn about hemophilia's pathophysiology, clinical presentation, diagnosis, and management in this concise medical review, ideal for physician licensing exam preparation.
- YouTube
- 12 minutes
- Self-Paced
- Free Video
Insulin Regimens - CRASH! Medical Review Series
1 rating

Explore updated insulin regimens for medical licensing exams, covering key concepts and treatment approaches in diabetes management.
- YouTube
- 17 minutes
- Self-Paced
- Free Video
Cushing Syndrome and Hyperadrenalism - CRASH! Medical Review Series
1 rating

Explore Cushing Syndrome and hyperadrenalism, covering key aspects for medical licensing exam preparation and clinical understanding.
- YouTube
- 15 minutes
- Self-Paced
- Free Video
Acute Respiratory Distress Syndrome (ARDS) - Updated 2023 - CRASH! Medical Review Series
1 rating

Explore the latest updates on Acute Respiratory Distress Syndrome (ARDS) in this concise medical review, covering diagnosis, management, and treatment strategies for healthcare professionals.
- YouTube
- 18 minutes
- Self-Paced
- Free Video
Dysphagia - Medical Review Series - 2024 Update
1 rating

Master the key concepts of dysphagia, including diagnostic approaches, clinical presentations, and essential treatment strategies for medical licensing exam preparation.
- YouTube
- 22 minutes
- Self-Paced
- Free Video
Internal Medicine Review Questions - Part 8 - CRASH! Medical Review Series
1 rating

Enhance your internal medicine knowledge with comprehensive review questions covering key concepts and exam preparation strategies.
- YouTube
- 1 hour 10 minutes
- Self-Paced
- Free Video
Epilepsy - CRASH! Medical Review Series
1 rating

Explore the latest updates on epilepsy, including diagnosis, treatment, and management strategies for medical licensing exam preparation.
- YouTube
- 25 minutes
- Self-Paced
- Free Video
Management of HIV/AIDS - CRASH! Medical Review Series
1 rating

Explore updated HIV/AIDS management strategies, covering diagnosis, treatment, and prevention in this concise medical review for healthcare professionals.
- YouTube
- 17 minutes
- Self-Paced
- Free Video
Psychiatry Review Questions - Part 8

Master psychiatry concepts through targeted review questions designed for medical licensing exam preparation and clinical knowledge reinforcement.
- YouTube
- 1 hour 7 minutes
- Self-Paced
- Free Video
Psychiatry Review Questions - Part 3

Master psychiatry concepts through targeted review questions designed for medical licensing exam preparation and clinical knowledge reinforcement.
- YouTube
- 47 minutes
- Self-Paced
- Free Video
Psychiatry Review Questions - Part 2

Master psychiatry concepts through targeted review questions designed for medical licensing exam preparation and clinical knowledge reinforcement.
- YouTube
- 57 minutes
- Self-Paced
- Free Video

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
All Subjects

Coursera
Udemy
Noble Desktop
Simplilearn
CodeSignal
Boot.dev
All Universities

The Report by Class Central RSS Feed

Series Finale of Online Education
Udemy Earns More, Pays Less
Duolingo's 2026 Strategy
1000s of Free Certificates
Best Courses Guides
Best of All Time
Most Popular of All Time

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.