h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Cleaning windows - Use warm water with a little detergent, and a sponge. For those hard-to-reach windows, you could use a spongey floor mop to achieve a greater reach. You may even need to open one window and lean out to clean another.

Wine glasses - wash as normal, then rinse in cold water with a splash of vinegar. Then use a lint free cloth to polish.

NB - a little vinegar in the water will also help to make your windows sparkle, blinding all your neighbours!

Alternatively you can just throw the vinegar straight in your neighbours' eyes. Which is a lot more satisfying if you don't get on very well with them.

For smear-free windows, after you've washed them and before they dry, polish with crumpled newspaper (the local free one is good for this).
Which reminds me, I haven't done mine this century.

I tried with the H2G2 Post but the glass on my screen cracked. Any handy household tips for repairing damaged screens?

Absolutely the best thing for this - as your grandma will tell you - is a little bit of baking soda added to the water. SHINE*

So long as it's not the same water that you put the vinegar in - otherwise it just froths up and makes one hell of a mess!!!!

Yes but you could probably make a fortune in a student bar......

While cleaning windows and using a ladder, if you don't have anyone to hold the ladder for you - get the bath mat from the bathroom and put it under the ladder - it won't budge and inch - have fun cleaning those windows with vinegar and newspaper.