Noob need help: Need tut on rpg making

[samesam]

Help me! I need a rpg tut! I want to make one where you can chosse your own hero and stuff like that!
Oh and i want to make custom heros, so i go into the object editor and create a guy, but he always turns out to be a unit and i want to make it a hero!

Hopefully that makes sense. Thanks alot!