If you search around, there are many available resources that could help you with various aspects related to the course. I just want to mention a few of them.
- Wolframalpha. You can use this website to plot functions and also to compute many things you will encounter in this course (limits, derivatives, integrals). In particular, this means that Wolframalpha can give you the answers to most of your exercises. The right way of making use of this feature is to first try to solve the exercise on your own and get to an answer and then use Wolframalpha to confirm your solution. Beware that, in some cases such as computations of integrals, if the solution given there appears different from your own, that does not necessarily mean that your solution is wrong.
- Geogebra. You can use this very intuitive website to plot and sketch graphs of functions.
- If you are feeling a bit rusty with the prerequisites or if you want to make sure you know them well enough, you can check here (for some Algebra review) and here (for some Geometry review).