You are on the right track!

I use coconut husk substrate. I like the look and it holds humidity well. There are lots of substrate options at any pet store (in store or online) and paper towels work too. Just don't use cedar, it's poisonous to snakes. But I have never seen cedar substrate anywhere because that is pretty much common knowledge.

I praise you for doing research and asking around! So many people get snakes just because they want one and don't bother looking into how to care for them properly. As long as you are always willing to learn more and make your snake's needs a priority, you should enjoy many long and happy years together.

Good luck!