Figure A drains and vents
Understanding Your Drain-waste-vent System - Plumbing Basics - DIY ...
The Word: Plumbing Vents & Traps | The ASHI Reporter | Inspection News & Views from the American Society of Home Inspectors
Plumbing Drain/Waste/Vent System http://www.make-my-own-house.com/images/plbig1.jpg
Plumbing Basics : plumbing follows the basic laws of nature : gravity, pressure, water seeking its own level.
http://www.mobilehomerepairtips.com/mobilehomeplumbing.php has some information on how to make simple plumbing repairs in one's mobile home.
How a Toilet Works & Toilet Plumbing Diagrams | HomeTips
How to plumb laundry sink and washer...-200701_laundryrm_007_sz2.jpg
How To Run a plumbing drain
http://www.manufacturedhomerepairtips.com/tipstofixcommonhomeplumbingproblems.php has some info about resolving some common plumbing problems withing seeking professional help.