Hey my name is Andreas and me and a friend is trying to make a game together but we don’t know or have a way to sync between us or/and work on the same project. pls help.
Use Perforce, Git, or Subversion - You can get a 1GB free one of your choice from http://assembla.com 
And visit the documentation here: Source Control | Unreal Engine Documentation To get started on setting it up. ^^