I just received my copy of Creating Model Buildings by Geoff Taylor, published by Wild Swan Publications in the UK.
It’s excellent – I highly recommend it to anybody looking to master structure techniques. It addresses UK building styles in 4mm and 7mm scales – so the British analogs to HO and O – but the techniques really are universal and the results speak for themselves.
Wild Swan does not have a web site that I know of, unfortunately. But if you can’t find it locally, I have always had excellent service from Camden Miniature Steam Services.