Get a plastic suction hook, wet it and it will lift the glass up for cleaning.

Warm water with vinegar in it, not too much, dampen a lint free cloth in the vinegar solution and wipe the table, dry off with another lint free cloth.

Ecloth... comet sell them You only use with water, and it works fantastically. It can be use on most glass/stainless steel, so although they are £10, you can use them on a lot of things. dont buy the cheap alternatives from homebase, asda etc, they don't work near as well!

Buy a microfibre cloth and dampen it slightly. You'll be amazed at how well it cleans everything!