Listen, you shouldn’t be getting downvoted for this. I am in a similar boat, and I just redid the surfaces and edges of a two-step concrete entrance to my back door. Similarly, I wanted to learn concrete repair, and I had some time while I was trying to figure out a different project on the house. It’s good you’re trying to learn.

That said, what others are saying here is true. The amount of effort it took me to even remove the paint and previous epoxy from what… 10 sq ft?… was freaking exorbitant. Grinding, chiseling, grinding again, chiseling again… it’s like… back breaking. It will take you way more time than you can reasonably anticipate or justify. And you have to do it if you at all want to actually repair the concrete. In your case, it might make more sense to use specific paints or epoxies that can be used on top of other coatings (i.e., the current paint) in order to smooth out some areas you don’t like. Do your research though and make sure you aren’t making bigger headaches for yourself.

If you in fact plan on repairing certain areas of concrete, I’d be happy to talk you through that. I’m pretty happy with my recent repairs and feel pretty confident now with the products to use.