Sketchupartists: Sketchup tutorial and rendering in English
Sketchucation: The most active French Sketchup forum!
Sketchup training: adebeo Facebook page
Alex Hogrefe : a sketchup and photoshop pro
ronenbekerman: a pro of a pro with tutorials in English and 3DS max but it remains crazy, ….
artefactorylab: surely the best French team