problems with the freebsd configuration...

I had just instal freebsd in my computer, wich is very nice,am very happy about it, am new to the unix os and i know unmost nothing and my problem is that i din't do i good configuration because i can get internet when i open the webbrowser, a have a yahoo dsl connection, i can't even play a cd in the cd-rw, and when i loggin as root and i try to open a /dir says :permission denied, am not sure how to give the -rwx- permission and i'd read the freebsd handbook but i can't fix the problem. Can someone tell me what to do? thax.

and what are the best book to learn the hole freebsd os, and to learn the hole unix system and to program in C.

UNIX RULES