The Bosch book is heavy going, and is more a reference guide, but to me is full of absolute gems of information.
I think this post, or a new one, could do with a "Page'O'References", as a lot of people like to read, but there is a lot of crap out there, and to be fair, most of it seems to be american. Also, be good to share some links from peoples bookmark lists aswell, as there are lots of interesting little sites out there with some interesting homebrew engineering.
I'll get on with mine after breakfast and start a new post!
-Gavin