Sketchup Resources
Download
http://www.sketchup.com/download/all
Class Files
Learn, Tips, Tricks
http://www.sketchup.com/learn/videos
http://www.youtube.com/results?search_query=sketchup
http://www.youtube.com/aidanchopra
http://www.lynda.com/Google-SketchUp-training-tutorials/953-0.html
http://www.lynda.com/Google-SketchUp-8-tutorials/Essential-Training/77962-2.html
https://sites.google.com/site/sketchupsage/
http://www.harwoodpodcast.com/sketchup?currentPage=5
http://sketchupforwoodworkers.com/
http://www.popularwoodworking.com/sketchup-tutorial-learn-how-to-use-sketchup-for-woodworking
http://www.sketchup-ur-space.com/tips.htm
http://www.ronenbekerman.com/9-sketchup-tips-for-better-3d-modeling-workflow/
http://sketchupdate.blogspot.com/search/label/Tips%20and%20Tricks
http://www.dummies.com/how-to/content/google-sketchup-8-for-dummies-cheat-sheet.html
http://www.mastersketchup.com/sketchup-tutorials/
http://web.engr.oregonstate.edu/~mjb/sketchup/SketchUp7RefcardWin.pdf
http://www.sketchupartists.org/
Official Sketchup Paid Training
http://www.sketchup.com/learn/training/classes
http://sketchucation.com/sketchucation-services/authorized-sketchup-training/
Help Forums
http://productforums.google.com/forum/#!forum/sketchup
Plugins
http://extensions.sketchup.com/
http://rhin.crai.archi.fr/rld/
http://www.scriptspot.com/sketchup
Components
http://sketchup.google.com/3dwarehouse/
http://sketchup-components.blogspot.com/
http://sketchup-components.blogspot.com/2010/09/architecture-sketchup-components.html