Don't know if you know about this webstite, but http://www.posemaniacs.com/ is really good for learning anatomy. I especially love their 30 second drawing tool, it's helped me progress so much.

Don't worry OP, you don't have to post anything you're uncomfortable with. Just keep practicing, and don't worry about whether you think other people are "better than you". Everyone has to start somewhere. As long as you enjoy doing what you're doing, that's all that matters :)