Advice for a beginner Linux user

Trying to learn how not to be a casual. Fairly used to Ubuntu and many of the commands necessary to run a Linux distro without a desktop environment (Arch Linux like a boss.) I'm running Windows 7 x64, and I'd like to NOT be. Could anyone recommend a new distro to try out and/or some good things to do or try to be better at not being bad? Any miscellaneous tip would help.

Most time (99% of time) I use terminals+graphic_web_browser.
I think its funny, and some times faster, but it's not the goal.

If you want to learn, start with vim/emacs. Read about bash redirections (> < |).
Read manpages of: ls, ps, grep, awk, less, find, sort, head, tail...

Most distros are good enougth but, real man use Debian sid.