The Free-to-Play stuff is...

Races: Barbarian, Erudite, Halfling and Human.
Classes: Cleric, Fighter, Rogue and Wizard.

You can buy a race or class (maybe both together, not sure), for a one-time fee.

There is a 'Silver' access, that gets you something... not sure what.
The regular monthly subscription, gets you all of the restrictions removed.