Learning Erlang? speedbump thread, common, small problems

Question

I just want know all the small problems that got between you and your final solution when you were new to Erlang.

For example, here are the first speedbumps I had:

Answer 1

net_adm:ping()

You going to start talking to another server? Remember to net_adm:ping('car@bsd-server'). in the shell. Else no communication will get through.