Welcome to Erlang/OTP, a complete
development environment
for concurrent programming.
Some hints that may get you started faster
Note that functions that are not imported or prefixed with a module name belong to the module erlang (in the Kernel application).
% erl -man <module>
There is also an Erlang plugin (ErlIde) for Eclipse if you prefer a more graphical environment. ErlIde is under development and should at the time of writing this be quite stable and useful.
Also note that there are some shell features like history list (control-p and control-n), inline editing (emacs key bindings) and module and function name completion (tab) if the module is loaded.