Just a little sticky to let you all know this forum has an extremely useful search function at the top of the page.
If you want to find a quick answer or solution, chances are we will have covered it before, so it'll usually be quicker to do a quick search for the subject rather than sit and wait for a reply from another member.
Usual questions are stuff like speeding up clips (type 'Velocity Envelope') splitting clips, applying effects, keyframing etc. Mostly it's all been covered before, so have a look first.... nothing to lose!
If you can't find it, ask away, we're here to help!
EDIT - Will start adding links to commonly asked questions and the answering threads as I think of them. Feel free to PM me with additions.
1. Jittery playback in your preview pane. HERE
2. Getting the hang of video speed variations (Velocity Envelope) HERE (Audio speed HERE)
3. Masking and Cookie Cutter HERE (Blurring something out HERE)
4. Faster Rendering HERE
5. Best Quality Render HERE
6. Chroma Keying (Green / Blue screen use) HERE
7. Adding titles in Vegas. HERE
8. Splitting clips. HERE
9. Keyframe explanation HERE
10. Basic Picture In Picture HERE
11. Sprucing up your videos in Vegas. Colour Curves HERE
12. Capturing a still from your video in Vegas HERE
13. Importing troublesome AVI's HERE