please tall me which is best online graphic tutorial site.
Your question is extremely vague.
What software are you using?
What tasks are you looking to accomplish? Are you looking for tutorials on specific techniques, or are you looking for a crash course in something?
tutvid.com I learn a lot from this site. Hope this one help you.
For photoshop there is photoshopessentials.com a very nice resource site.
The Lynda is the best place for learning Photoshop and any other graphics software's. I have learned from (Lynda.com) Photoshop Coral Draw and 3Ds Max software.
Hands down PSDTuts will teach you almost everything you need to know about Photoshop.
Depending on what are your requirements, there are various websites which can help you with online graphics.
Do you want to download graphics?
Do you want tutorials?
Are you looking for live examples?
Most of the things you would like to learn are available on Youtube.
Watch the videos there.
Lynda.com is a great website to learn almost everything related to graphics.
check this 1
my advice to you 4 graphic designer as professional or amateur no thing is call the best site ! you have to check everything as much as possible, u will not learn everything for 1 or 2 web sites .. best wishes