What i want to learn....

Since obtaining this Macbook in the summer, I have yet to teach myself how to use applications such as Garageband and iMovie. Knowing from what I've heard from other friends who have taken this class already this year, a lot of projects will be conducted in these particular applications. So i definitely want to learn how to use both in this class. I used to be able to make several short clips and movies to post on Youtube, but I havent done that in over a year and I dont know how to use iMovie. Everything was plain and simple on a regular Windows PC. I hope to have fun in this class.