some interesting web sites...

MIT physics online
http://phischkneghtx.blogspot.com/2006/02/wikipedia-doesnt-know-what-roof-is.html
offers physics courses via online video

Web 2.0 Directory : Top Web 2.0 Sites ( web2.0 )
http://www.econsultant.com/web2/index.html

37 Signals secret to success ($19 pdf file)
https://gettingreal.37signals.com/
instructional business book on web2.0 methods and processes