Sure! The poketcg hacking discord server has a ton of resources (
https://discord.gg/jeZtEab2). See the Useful Links section. There, you can easily access some rom bases we have built and tutorials. Speaking of which, the official poketcg pret has a wiki that is constantly updated on how to do various things. (
https://github.com/pret/poketcg/wiki)
For now, I personally recommend using Shaoden's Poketcg_v2 as a game base, because they made everything so easy to find and manipulate. Either that, or if you are a madman like me, Electro's Poketcg Extended base- which can contain up to 511 cards.
I am in the middle of making my own rom base too, for my next hack, Pokemon TCG Advanced. However I can't tell you when that will be done, so I won't recommend it yet,
Regardless, happy hacking.