If you're interested in purchasing your own copy of the Student Edition of Maple, you can get a reduced price at webstore.maplesoft.com using Promotion Code: AD5675 and Course Name: T Ratliff. This is only available to students registered in the class.
I written a Maple Cheat Sheet (.pdf file) with the vast majority of the commands you'll need this semester.
Mike Pepe of Seattle Central Community College has written a nice Maple Essentials tutorial.
A good resource is Waterloo Maple's Student Center.