Godofwar, open a terminal window (terminal is an app, search in the spotlight bar or at the Aplications folder, inside the subfolder Utilities.

Then, type at the terminal:

defaults write com.apple.finder AppleShowAllFiles TRUE

Pay attention! Type exactly as i wrote, since it's case sensitive. Then, <enter> and you tipe the following:

killall Finder

Then you hit <enter> again, and voilà: a lot of hidden files will suddenly show up!