hello...

['Forum Post]

the admin password is your normal password. see here for details :
https://wiki.ubuntu.com/RootSudo



as for gcc, open system->administration->synaptic, search for
build-essential, and install. 



do look through synaptic to see if what you're trying to install is
available though. it is much easier that way.



and definitely read ubuntuguide.org and
https://wiki.ubuntu.com/UserDocumentation


-- 
Leif