some useful comments about AI

Pathfinder in the window section

This Alien using offset path, Path finder, Expand, Stroke, gradient...

http://www.vsellis.com/understanding-dpi-resolution-and-print-vs-web-images/

understanding print n sreen

the standard screen view dpi is 72 dpi

this is an very important design knowledge, must remember

300 for print 72 for screen

http://www.wikihow.com/Add-Layers-in-Illustrator

this function

that mean u not need to put the pic which u wan to trace at beside, u can put behind in the new layer n lock it

After u trace out u can just hide the layer.

http://vector.tutsplus.com/

Give u an address to learn AI

http://vandelaydesign.com/blog/design/learn-adobe-illustrator/


 http://vector.tutsplus.com/tutorials/illustration/magical-vector-landscape/