Jeff's one of the older hands around here, he's been doing it for almost three months now. I think Kerry has been doing it the longest, he started last year some time.
Mathew, I started to toy with lisp a looooong time ago but didn't get serious about it until 3 years, or so, ago. And I use sreious quite loosely here. I still toy with it, but my 'toys' just get bigger, badder, leaner, meaner.
IMHO, the best way to learn is to figure out something(s) that you do repetitively and try to automate that process, reading the help files and these forums for guidance. Try your best to figure out something on your own before posting for help. It's not that you won't find plenty of us willing to help, but more like if you find the answer through trial & error of your own you will retain how it is done far longer than us just doing it for you.....