Betta First Aid?

I know you people are probably sick of me. But guess what I'm going to make another thread anyways lol. I recently acquired two Betta fish. They are fine as far as I can tell; even though I'm not to hopeful as I'm trying to cycle their tanks. It will be a miracle if they live. I'm being as diligent as me and my wallet can to give them a good life.

So I know at some point they may become ill and I want to be prepared. What do you guys recommend for a good hospital tank set up? Also what are good medications and remedies to have? I know about the aq and epsom salt, not really sure when to use them.