The bad news is basically everything. The good news is, if you organize it right, that's almost nothing.

\- Limits: All the tricks except conjugation pretty much get replaced with L'Hopital. For graph or infinite problems, mostly use common sense.

\- Continuity: The only actual limit law is "if it's continuous, plug it in". You probably won't need the IVT.

\- Derivatives: What's to say? Know all the formulas. (That counts as one thing.)

(Implicit differentiation is just the chain rule, related rates are just word problems where you can use implicit differentiation as a shortcut.)

\- Applications: Optimization means look up Fermat's theorem. "Approximate" means "use tangent line instead of the function".

\- Conceptual stuff: All the theorems in the increasing/concavity/MVT chapter. You probably won't need them, or you'll cover them again in cal II.

More important going in is a mindset shift. The problems are open-ended, so you just have to accept that you will not immediately know how to do a problem at first no matter how good you get. That's fine. Try stuff. Also you'll use sum notation a lot in the beginning. Don't throw that out. It'll be essential for applications.