RTFM is a common IRC and chat term which means "Read The Fine Manual", with varations on the meaning of the "F". (most commonly it means "Fucking").
RTFM'ing is not hard. I shall detail the steps you must preform below.
1. Locate the fucking manual.
2. Read the fucking manual.
If this task is too difficult for you, please ask someone to hold your hand while you re-attempt the task.