How do a repaint a room that the doorframe and light switch is painted over?

im moving into my sisters room because shes going to colledge ,the room is a tacky tan color with shagged carpet and that needs to be changed. i have no idea what to do about the way the previous owners painted. they painted over the door frame and right over the light switch its just rediculous and i dont know where to start.
How do a repaint a room that the doorframe and light switch is painted over?
Just repaint the door trim whatever color you wish, and you can replace the light switch cover for 30 cents for plain, or a couple bucks if you want something ornate / metal.

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