LEGO Builder's Guide Book

If you want to start building to scale, but are unsure where to start you could do worse than to pick up a copy of the 'Unofficial LEGO Builder's Guide' by Allan Bedford (No Starch Press)

It has an entire chapter related to the building of larger scale bricks including the topics; 'How It's Done', 'What Scales Work and Why' and 'Approximation'. It has step-by-step examples of how to build a few simple bricks and covers 4:1 to 12:1 scales.

You can buy it online at Amazon;

http://www.amazon.co.uk/LEGO-Builders-Guide-Bedford/dp/1593270542/ref=sr_1_2/026-2197561-8109213?ie=UTF8&s=books&qid=1183319058&sr=8-2

or I noticed it is now available to purchase in the Legoland Parks themselves.

The rest of the book is excellent too and I learnt a lot of good techniques. I also has a wonderful 'Brickopedia' about what parts are avilable and when they were introduced.