How do i use software

I just downloaded dvdshrink and dvdfab but I don’t know how to use them together. I dum

Start with the DVDFab software it has guides to use:
If you have the full bought version you do not need shrink, it does it all.

Guide to DVDFab

http://club.cdfreaks.com/f116/official-guide-dvdfab-231930/

Shrink website

http://www.dvdshrink.org/what_en.php