On a Macbook Pro, hitting Fn (the function key) and up on your keyboard, will act as home. To remove a mapped key that you don’t want, navigate in the command palette. I forget what tab it’s under, but there’s a “Blank” option there. Drag “blank” over what you want to erase.
If you’re just coming over from FCP, I’d highly recommend the Media Composer for FCP Users DVD. Avid sells it on their website, and it got me up on my feet fast coming from FCP to Media Composer.
Richard Sanchez
North Hollywood, CA
“We are the facilitators of our own creative evolution.” – Bill Hicks