Electronics

Useful website that has good articles, project  ideas  and tools for designing circuits including various impedance and current calculators. http://www.eeweb.com

Other builder website links

Dalek Building
Groups for people who like to discuss or model their own
Project Dalek http://www.projectdalek.com/projectdalek/

Bender building and beer
A link to the Bender Brewer project http://www.asciimation.co.nz/bender

K-9 Building
I used the published BBC plans I found here
http://www.snarpco.com/k9/
for shape and size of my K-9