Crash Course in calculus

OK, I'm taking a course called Applied Differential Equations and I'm quickly finding out that I need a crash course in calculus.

So, does anyone have any websites, advice, or some sort of plan that can help me here?

OP here, and I think I should have restated my problem in another way.

I know the basic definition of integrals and derivatives, however, I have BIG issues with things like integration by parts, spotting the derivative and integral of trig functions right away, and basically, just rules they don't tell you until like 2/3 of the way into the term