Tutoriales Illustrator

http://design.tutsplus.com/categories/adobe-illustrator

http://www.instantshift.com/2009/03/19/125-ultimate-round-up-of-illustrator-tutorials/

http://www.instantshift.com/2010/04/30/70-excellent-fresh-adobe-illustrator-tutorials/

http://www.gusgsm.com/algunas_tecnicas_adobe_illustrator

http://www.tutorial9.net/category/tutorials/illustrator-tutorials/

altres:
icones gratis:

http://blog.spoongraphics.co.uk/

http://www.creativebloq.com/

http://vectorboom.com/

http://www.vecteezy.com/