Linux commands

[GLS-Ausmines]

I am new to Linux, just installed Debian 3.0r1 to and including the basic setup. The OS appears in text mode, and I could not get further than logging in, having no clue of OS commands.   Questions:-   1. Is there any Internet access to Linux commands? (I have not found any at Debian and Redhat sites.)   2. Gnome, KDE, X  interfaces do not appear - How to invoke them?   As it is, the installed Linux is a dead page.   Thanks.   G.L. Seymour