Seconding the suggestion from @bopper about Khan Academy. They have videos going up through multivariable calculus and they really helped when I had a frustrating professor my freshman year. Especially when it comes to using the unit circle, if you are in computer science/engineering/math it really helps to fully understand it because it comes in useful later!
There are also books and books of worked example problems because these are the sorts of problems that also come up in the math portion of the GRE occasionally. Poke around Amazon for practice books.