Here's a couple helpful tutorials for you.

byudragon.com/Tutorials/DAZ/Packaging/Packaging.html

www.sharecg.com/v/25719/PDF-Tutorial/Simple-Packaging-Tutorial

If you need further explanation, don't hesitate to ask.  

One thing I would caution though, make sure that anything you package and offer is yours to share.  If it is a derivative of another's work you must have their permission prior to sharing.

Good luck and can't wait to see your work! :)

~Crystal