F2p:
Runescape
The Chronicles of Spellborn (has become F2p because of development issues, play it while it's free)
-this MMO is TPS crossed with RPG, you need to aim at your enemy to make your spells, arrows and melee attacks hit, it has a unique combo system.
2moons
- the most brutal and bloody RPG I've played, you can literally quest until max level, you won't get bored easily. You can use multiple clients at one time with 2 separate accounts for vending and simultaneous power leveling.
Anarchy Online
- The golden oldie of MMORPGs, they update every other month or 3, has a great community of helpers (called ARKS), pretty okay graphics for an 8-year old MMO, there is an option to pay, but it's already cool at free level. Lots of jobs and races to choose from.
A pleasant MMORPG gaming to ya.