So, I live in Indy, I have been to one tournament (Nationals), and I want to get into competitive play more and I want to know a way to find a league or small tournaments around, maybe even a card shop that sells singles
Go to the Play Pokemon section of Pokemon.com. From there you can type in your zip code and it will give you all sorts of things going on around you. Pre-releases are coming up too and that is a good way to find out where they are.
