Taking Calc II after two years of not being in a math course, so I can relate to an extent. How far did you get in math courses before now? I may have some good pages of trig identities and derivative/integral rules I can send your way (for making flashcards or flat memorization) alongside a cool trick for knowing your unit circle. All of which I'm currently using to brush up myself, hehe. FYI, I was just notified that khan academy expanded their math section to cover college level maths and calculus (and higher) if you're able to learn by that method. They also provide practice problems. Dusting off cobwebs using baby steps (reviewing one sheet of identities per day) has been most helpful for me.I'm about to start up college again after having taken a four year break. . . . I'm also taking Calculus and an Economic Statistics course.