Go the program and started messing around. Did a couple experiments, checked a few forums here and there, found what I liked and wanted to use versus some of the features that I probably won't ever need. Just decided to edit with Final Cut and only Final Cut, and let that long trial-error process be my guidebook.
EDIT: That's the beauty of it, though, for a Mac user. It's completely 100% intuitive. You apply same logic to your editing suite that you use every day on your operating system. Very, very easy to get used to.