How do i log into Github with my ue4 creds?

I dont know how this whole complicated download process works, and after days of trying, I really need help. can someone explain this to me?

U register on Github like on UE, then u go to UE and in profile u type in ur Github login. This way UE knows ur login on Github and give u access.

The biggest thing everyone keeps fudging up is. You have to activate the emails.