You did not say if you had ever used a serger. Here are a few books I have, you might want to check them out of the library first.
Singer Sewing with an overlock
Serger Secrets by Rodale Press
The Ultimate Serger Answer Guide
Creative Serging
and a few others I've put away just so I can not find them again. Check out the serger books co-authered by Nancy Zieman, usually have discs with them and they're more up to date. You might want to check back with the person who sold you the serger because the bells and whistles on them are constantly being updated. My old standby is just a basic work-horse. Your's probably threads itself and makes coffee too.
Some vo-tech schools offer classes, as do the shops that sell the machines. Didn't you get classes with the purchase? They are great for making lingerie for men and women.