Welcome to the RPC, and welcome to Balmung!
I'd say the best thing you could do to get started is to just try to meet people in-game and engage in some casual RP. The Quicksand in Ul'dah is a good place for that! You could also look at upcoming RP events to see if anything sounds interesting. The biggest problems with both of those are that there can be a lot of people around which can make for a lot of simultaneous chatting: especially for a non-native speaker it may be hard to keep up.
I'd say the best thing you could do to get started is to just try to meet people in-game and engage in some casual RP. The Quicksand in Ul'dah is a good place for that! You could also look at upcoming RP events to see if anything sounds interesting. The biggest problems with both of those are that there can be a lot of people around which can make for a lot of simultaneous chatting: especially for a non-native speaker it may be hard to keep up.