Youtube Reference
I've found an unbelievable amount of instructional and reference material available on YouTube. Here's a collection of YouTube channels that provide self-contained tutorials, tips, and explanations. They should be a great jumping off point to learn about a topic.
Back Posture
Basketball
- BBallBreakdown - analyzes NBA games.
Building a Computer
Golf
Medicine
- WI Family Medicine - I found them looking for the details of a knee exam
Weight Loss
- FatHead, specifically this excerpt about insulin management.