Learning London geography

Buy two London A-Z, rip out all the pages, cut the overlapping bits off and then stick them together and put it up on your wall. This way you can see the whole of London at a glance in a format that is recognisable.

Or buy and atoz map for a quarter of the price?

What most people do these days is by glueing the free London Cycle Guides together. It gets pretty huge but if you do it well, it's an amazing wall covering.