Weight paint tutorial

allyxp000

Hi! I'm not new ... but I've never understood how weight the painting works ...

Every time I make slip or pants for Genesis, if the model moves their legs, the verticles of the clothes that I did move wrong ... 

As you can see in this forum:

http://www.daz3d.com/forums/discussion/96416/problem-with-pants-that-i-made-for-genesis-3#latest

I don't understand this "weight paint", maybe because I don't found simple tutorials...

What can I do?