Adobe After Effects is a high quality post production tool for creating many of the complex multi layered shots. It is also useful for recreating many of the classic Star Wars effects such as the opening crawl.

Bluescreening with After Effects
Michael Hobson has created a  bluescreening tutorial which covers a lot of techniques including channels. This is a tutorial you will need to learn to create effective CGI with live action shots.
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Opening Crawl
Probably the most requested tutorial. This tutorial is for creating the opening segment which unfolds the story at the beginning of each Star Wars film. Although this tutorial requires the Production Bundle of After Effects, TFN FanFilms is finishing up a tutorial variance for the basic package.
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