I have a few questions about Blender.
1. How do I use it?
Practice I've been messing around with it on and off for a few months and I'm still learning new things.
Here's a good resource for getting started also their site has some video tutorials that are pretty good. If your willing to shell out ~45 dollars theirs an awesome book
The Essential Blender that covers most everything, you could get that off thier site or maybe amazon. The full book is also on their web site
Link, although I like to have the a book in front of me.
2. How do I take screenies?
F12 to render. F3 to take screen shots.
3. How do I upload the screenshots/model?
Image hosting site or file hosting service...