Two absolute best references:
Nurses Clinical Guide: Wound Care, 2nd Ed.
Author - Cathy Thomas Hess, RN, BSN, CETN
Quick Reference Guide for Clinincians, #15
Pressure Ulcer Treatment
US Health Dept of Health & Human Services Public Health Service Agency for Health Care Policy & Research
Always keep your dressings simple, try them for at least a week to measure any change. Instead of expensive creams you can make your own skin protective creams by using items found in the local drugstore: A&D oint, bacitracin, & zinc oxide ointment; maalox also is good on the skin to protect it from acidic drainage. If you have a specific wound in mind - describe it. Also check out www.wocn.org