tutorial O.p.k and invisible

Hi can say me the tuto of Opk and invisible
thanks

GTFO newb and try looking in the tut section before you post a thread about it cause i know it's there

grrrrrrrrrrrr, i hate noobs that insult to other users, vahe ur the real noob and stupid and... IS NOT NECESARY INSULT STUPID NOOB!

Scott, i tell u this tutos, don't worry