First off, a big hearty WELCOME to TRT.
(You could NOT have picked a better place to start!)
You can check out a recent thread, in which people share their "light timing" schedules for a start:
http://www.thereeftank.com/forums/sh...ad.php?t=48363
also, I'm sure others will chime in with suggestions.
But as a heads up, I think this is one of those questions that has no true right answer. It's all a matter of preference, and financial stability (electric bills).
There are guidelines, general ranges (i.e. Don't leave 'em on 24/7), but other than that, it's up to you, your schedule, etc.
Check out that thread for some initial info, search this forum, and just stay tuned!
Welcome again, and good luck!