You don't need the manual for that, although its always very helpful. www.Sewusa.com
have a manual for the 6130 but I dont know how close that is to your machine, but you could certainly email them and ask. Or contact the local Euro-Pro dealership may well be the easiest solution.
Different feet are for different techniques and any good sewing techniques guide book should help you through.
Here is a good website on sewing feet.
If you are assembling garments then you will still use the standard pressure foot for 90% of the work. You would change to use the zipper foot to put in zips, maybe the blind hemming foot to turn up straight edge fabric (can't use on curved hems very well unless its a knit) or a rolled hem foot for turning in a small edge and stitching it. And of course the buttonhole foot, for getting nice neat buttonholes.
Your machine's accessories case may have these feet and a few others.
You may find sufficient info at www.sewing.about.com
on where and how to use these feet.