Top Tip: Do this chore on a cloudy day. Sunshine causes streaks, as the windows will dry too quickly.
First Things First: According to wikiHow (and common sense), wash indoors first - the outdoor job will be much dirtier and you'll go through your tools and cleaner faster.
Homemade Window Cleaner: Cheap and green! Mix equal parts white vinegar with warm water. Alternate: one teaspoon of mild dishwashing liquid to several gallons of water. If cleaning in very low temperatures, adding 1/4 cup denatured alcohol to a quart of cleaner will keep the cleaner from freezing.
The Basic How-To:
New to Using a Squeegee? A photo step by step can be found right here at Readers Digest.
Good for Touching Up Around Edges and Drying: Microfiber cleaning cloths, crumpled newspaper, a chamois or lint-free rag (see Martha's list below for more cloth suggestions).
Don't Forget: to put down a towel along the windowsills indoors to catch drips.
Trick for Spotting Streaks from "How to Do Just About Anything" : Wipe one side of the glass with horizontal strokes only. Wipe the other side with vertical strokes. If you get a streak you know right where to go to remove them with a soft, dry cloth.
The Contents of Martha Stewart's Window Washing Kit:
How to Remove Window Decals From Real Simple Cleaning: Dollop mayonnaise on the spot, then scrape it off with an old credit card. The oils in the mayo dissolve the adhesive, and the card won't scratch the glass.
Please add your best tips and tricks for window washing to the comments below for future updates to the post - thanks!
Image: Janel Laban from Meg & John's Big City Home