[Endoperez]

Welcome!

The forum organizes longer games, and there's also an IRC channel for quick games. Long games are one turn/few days, usually, and can take several hours per turn for diplomacy, trading, planning and actually playing the turn.
Blitz games played on the IRC channel are played with few nations on small-ish maps, and are usually over in hours. Blitz games are, by necessity, more competitive. Joining a newbie game or taking over someone who has to leave for a time or permanently is a great way to learn. If you want to join a full game, I suggest asking some question in the IRC channel. Few blitz games will teach how to design a pretender that will support your nation instead of shooting it in the leg.

FAQ is a good place to start.