Crash course in PLO needed

[NT!]

Playing in a rotation game tomorrow, 5/5 blinds, alternating rounds of NLH and PLO. I am a good NLH player and have no idea how to play PLO.

Links? Essential posts / sites? Sorry I know this is a noobish and stupid question. Feel free to berate me. Don't have time to wait for a book to arrive obv.

Thanks,
NT