I like all the people complaining about Diablo 3. You are all going to buy that shit anyways and give Blizzard your money because in the end... its Diablo 3 and not owning it is probably a sin in whatever religion.
Are you one of those people who hates great things? Because TerraFirmaCraft being in the launcher would be a great thing. I manually install every update he puts out but I would love it even more if it was in the launcher.
It would help if we knew ANYTHING about the error your friend was getting. "He cant connect!" is pretty generic. What is it telling him? Connection timed out? Read error? What?
Come on now. Help me help you.
You want us to teach you how to play the game step by step in a thread?
Signing your name is against the rules by the way... so you might want to edit that out!
Because helping yourself can consist of searching the forums, posting a proper bug report, using basic problem solving or even... hear me out on this one... taking the time to write an intelligible and understandable post!