And do try to avoid adopting a tone or use of language the other person might find offensive. We're here to help, not to annoy. Finally, please don't use the acronym RTFM or its unabbreviated form. If people were comfortable with the manual page, they probably wouldn't be here. Suggesting a man page as an aside is acceptable, as long as it is quite clear you are not suggesting it as an alternative to trying to help them through their problem.
Friendly support requires hand-holding.
We know you are not paid to provide support here, and we really appreciate your help. But you do not have to answer any one question, or help any one person. If you feel yourself getting frustrated or impatient with a user, walk away for a few minutes. Pace yourself, and don't try to be the Superhuman Support Machine. If you begin to get burnt out on support, we're depending on you to manage that.