*Noobie to L2Walker* Need Help and Explaination

Hi I'm new to this forum and just started playing Lineage 2. I was hearing that everyone uses L2walker.

I've been trying to find help on google, but no luck.

Can someone explain to me what cracking L2walker means?
I also keep hearing people are waiting for the cracked L2walker instead of paying for it.

Also what is the different between OOG and IG L2walker?

I want to level quick :D
How does this all work?

THANKS THANKS

dont be lazy and use search button

Well even i have used the search button but still dont understand eveything i just started playing Lineage 2.