I hated teaching because most of those kids got their guitars for christmas and weren't dedicated, so every week we'd run over the same crap. you get paid true, but it was disheartening. if you've got a dedicated musician asking for help it's a blessed thing and teach him/her all you know even if you don't think it's much.

(on the other hand, you could be teaching him or her bad technique which will only result in injury and/or death. tell him that. he could die.)