I am not a member of anonymous but I can help you about hacking/computer.There is so good videos about learning on youtube,try to watch them.If you want to learn more connect to me on email
Probably you can't use it with illegal ways.You should use legal ways to learn it.Go to a police and say it probably they can help you.Steam's database has got so good protection system so can't hack it
try to use mobile tracker,its like mobile rat.You can check her phone or control it
how to use?
1-download mobile tracker in your phone
2-Download mobile tracker in gf's phone too
3-Register to mobile tracker
and you can use it.
If there are some grammar bad's I am sorry my english isn't perfect