Final Cut Help?

First off, I’m cutting a piece with 4 video tracks overlapping, and the friggin’ things flicker like hell! But they do so consistently, flashing pieces of the other ones. The footage is fine, so it’s a problem with the overlaying? Do you know a filter that will fix this, or a setting I could change?

Second, I’m very profficient in iMovie but recently made the switch to Final Cut (Express) for obvious reasons – expect that it’s WAY HARDER!!! Do you know any free internet sources for help? I will break down and buy a manual soon, but in the meantime I need something to search through.

Please help!