This is a list of some tutorial providers I really like:
Andrew Price
Blender 3D modeling tutorials.
Derek Banas
Internet programming tutorials and more.
Common Craft
Game Development Tutorials
HOWCAST
Simple tutorials on almost every subject. Has an iphone app.
Travel Linguist
Great language learning approach.
IFIXIT
See machines taken apart, from Ipad to Kindle fire (called ''teardowns''). Create or view custom repair manuals from phones to Cars. Has an Iphone app.
EverymanIT Computer Training
FREE COMPUTER TRAINING, FROM BUILDING ONE TO CODING ONE.
Codecademy
SnapGuide
Free DIY guides for mobile devices.