Before starting calculus, we need to know the rules of algebra. We’re talking all of the rules. Even those log ones.
If you accidentally tossed out your notes from algebra class, you can always check out the Shmoop Algebra Guide to review. We will run into polynomials, natural numbers, square roots, and inequalities, plus all the other stuff. We’ve seen them all before, so that might actually be welcomed news. It’s not all limits all the time.