Learn four different techniques for creating background blur in Photoshop, ranging from beginner to professional level in this 18-minute tutorial by Colin Smith from photoshopCAFE. Discover how to enhance your photos by applying various methods of background blurring, with each technique increasing in complexity and effectiveness. The tutorial is organized into four distinct levels: Level 1 for beginners (starting at 00:34), Level 2 for intermediate users (01:43), Level 3 for advanced techniques (05:52), and Level 4 for professional results (07:20). Written instructions and the sample photo used in the demonstration are available through the provided link. Perfect for photographers and digital artists looking to create professional depth of field effects in their images.