Guide to working with Cinelerra
The best guide for understanding how to work with Cinelerra I have found so far is this one:
LOADING MEDIA - Import your resources in Cinelerra FIRST EDITING- Arranging edits in a basic layout SECOND EDITING - Finishing off and polishing
It answered the following questions for me (directly or indirectly):
Q: Why does my quicktime export have such weird colors and how do I change it?
A: You can adjust the codec used by clicking at the tool icon (Configure video compression) before the video in the render dialog.
Q: How do I make my labels into a selection?
A: Double click in the space in between two of them.