Tuts+ Premium is designed to help you grasp and practice complete skills. Learning via tutorials, eBooks and courses means that topics are covered in-depth from many different angles, leaving you with a well-grounded understanding of how to apply the skills you've learned

There are lots of free tutorials although some have limitations on them such aas you cannot download the source code. Each section has its own sub-domain and is listed below:

• psdtuts+ - Adobe Photoshop Tutorials from Beginner to Advanced
• Nettuts+ - Web development tutorials, from beginner to advanced
• Vectortuts+ - Adobe Illustrator and vector tutorials, from beginner to advanced 
• http://audio.tutsplus.com/Audiotuts+ - Audio and production tutorials, from beginner to advanced
• Activetuts+ - Browser app and game development tutorials, from beginner to advanced.
• Phototuts+ - Photography and post-processing tutorials from beginner to advanced
• Mobiletuts+ - iPhone, Android, Windows and BlackBerry mobile development tutorials.
• Webdesigntuts+ - In-depth tutorials and articles on web design
• Wptuts+ - A WordPress Website dedicated to WordPress training, tutorials, and WordPress videos
• Aetuts+ - Adobe After Effects tutorials from beginner to advanced.
• Cgtuts+ - 3D, Maya, Blender and more tutorials from beginner to advanced