Anyone Ever Tried to Green Screen It?

Looking into some video options, and I saw a whole bunch of green screen how to's (didn't even know you could go to Walmart to get everything you need for less than $20) on youtube:

Has anyone ever done this effectively before? Any tips or resources you could point me to? I saw a pretty cheap greenscreen $30 software with backgrounds package from my email the other day, wondering what everyone else has used...
Appreciate any replies!

you can get that on amazon, build a frame of find something to hang it from. Make sure you have good lighting and don't wear anything with green in it and your set. So much cheaper in the long run if you are going to do lots of videos