4 links
Extreme How To: Do it Yourself Window Replacement
extremehowto.com
Step by step illustrated tutorial; from measurement to removal through final trim.
Handyman USA - Doors and Windows
handymanusa.com
Articles on squaring a frame, locks, sills, glazing, and sliding glass doors.
Hometime: Windows and Doors
hometime.com
Tutorial covering styles and options, general installation instructions, and specialty installation instructions for Tilt-Pac windows, roof windows, and garage doors. Photographs, …
Vinyl Replacement Windows Buyer's Guide
vinylreplacementwindows.org
Advice and tips includes features, options, purchasing and installation experience.