informative pages
Traité d'électricité et d'électronique pour le radio amateur [fr]
Un très bon cours d'introduction.http://perso.wanadoo.fr/f6crp/elec/
GBPPR (Green Bay Professional Packet Radio)
The way those very knowledgeable people abuse the RF spectrum is absolutely worth being seen.http://www.gbppr.org/
Mike's Electric Stuff
Very interesting photos and comments about the insides elecric and electronic stuff. Features a very nice collection of special electronic tubes.http://www.electricstuff.co.uk/
Voltsamps, Powerlabs
Two websites mostly about highly violent and dangerous stuff (HERFs, railguns, ...). A must see.http://www.voltsamps.com/
http://www.powerlabs.org/
suppliers
PCB-POOL
A professional prototype PCB maker, recommended if you have a complex circuit to build with small SMD packages. They have an excellent customer service, and they can email you photos of your PCB while it's being fabricated.http://www.pcb-pool.com/
Gotronic [fr]
Un petit fournisseur français de composants, en général pas cher et avec un catalogue assez étendu. Bonne qualité de service.http://www.gotronic.fr/