Gold Pressed Latinum (GPL) is a fun currency in STO that allows you to buy various fun accessories and gear for your ships and toons. You can earn GPL by playing Dabo at Quarks' on DS9, Drozana Station and several other locations around the game. You can also get small amounts from DOFF missions as well as from the Talaxian ground DOFF when you put it on active ground duty and do ground away missions. There are also several accolades for earning large amounts of GPL. Once you have some GPL you can buy the items from a GPL store. There is one in Quarks' on DS9, one on Drozana Station, and one at both the winter and summer events (if you know of others please share them with the fleets).