Beginner help guide to PLO

hi i have been playing NLHE since 3 months and studying very hard

finally have beaten NL2 and will begin NL5 tomorrow

but i also would like to start tomorrow a study of Omaha Pot Limit

all i know is u use 2 of ur 4 cards and 3 of board

is there any post here with the very basic strategies? or any link?

i tried to google other day and didnt find anything

thank u guys