You've played two games already...
But in case you forgot it and/or deleted it, you can find a full list of the servers here:
http://www.minecraftsurvivalgames.com/servers/
There are four main regions:
United States - US.MCGamer.net
Europe - EU.MCGamer.net
Australia - AU.MCGamer.net
Canada - CA.MCGamer.net
Choose whichever region is closest to you.
From within those hubs, you can access the individual servers and gamemodes, if you don't want to use the individual IPs, using the compass and signs.