Also, check the griplist Yahoo group. There's a lot of tips and tricks for CSML, as well as a large collection of D&D3e griplets for a character sheet. These can be tailored for other character sheets, rules and genres.
Berg pointed me toward this list a while ago, and it's been a great help while trying to get to grips with GRiP. Always willing to help, Berg also runs regular tutorials from his GRiP Board - look in the Tavern.