Help I'm Stuck - Can Youtube help?
So it's after class and you're stuck. You want help now and no one is around. If you are in a pinch try searching these youtube channels for the kind of problem you are stuck on. I've listed the channels in order of helpfulness so try the ones at the top first.
Try tdewitt451for a bunch of excellent explanations of basic problems about the Atom, Gas Laws, conversions and a so much more. (This one is my personal favorite) - UPDATE Starting in 2022 this channel started getting AP level content!
ChemistNATE has a couple hundred videos on solving problems for topics we cover and some we don't.
TheChemistrySolution - Straightforward chemistry problem solving tutorials
Try Crashcourse for basic summaries about chemistry. Great for Test reviews, benchmarks and finals
This youtube channel for Educator.com has lots of topics and high quality explanations. It's actually difficult to find ones about chemistry because there are so many, but try searching "AP chemsitry" and scroll through for the topic you need.
Try brightstorm2 for more advanced questions (This is probably from a college class but there are some decent Thermochemistry problem's here)
Ben's Chem Videos has a bunch of helpful videos as well.
But Wait there's more...
Chem4Kids is a great site for simple chemistry explanations
Physics4Kids is a good website with straight to the point explanations of physics concepts
The Annenberg Learner Foundation has some good Big Picture videos for chemistry and other topics as well