There are some links to sites similar or not similar.
Both sometimes I go to add my personal insight. Perhaps also you could spend a little time just to see it, there's no harm in it?

CAD Tutor.net	The best free help for AutoCAD on the web
TenLinks.com	Directory of CAD, CAM and CAE
CAD forum.cz	CAD tips, tricks, discussion and blocks
Tentangcad.com	Indonesian's website for CAD
EllenFinkelstein.com	Click here to view more details

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