1 - download it by: git clone https://github.com/Mr-NemrMedo/fb-group-hack or download zip
2 - put it in your file with another your tools and scripts
3 - cd ( name file you puted the script in it)
4 - ls
5 - cd fb-group-hack
6 - ls
7 - python2 fb-group-hack.py
8 - follow the instructions in the script