(For departing aircraft: Unless you are flying patterns, please file your flight plan before contacting ATC.)
Also
Please only use “Remaining in the Pattern” if you are planning on doing touch&gos/patterns!Otherwise, please use the “departing north, south, east, west" or "straight out” command.
KFAT is what we use for training during the IFATC training process - this is one of many and it is the first that comes to mind. In general, my recommendation would be to train at parallel runway airports that are simple, and easy to learn the fundamentals of a GTS controller at - nothing really difficult or high traffic.