creative workshop 80 challenges to sharpen your design skills pdf

this books text: http://www.graphics.com/article-old/five-challenges-sharpen-your-design-skills

http://www.jruiter.com/

http://www.davidsherwin.com/creative/

http://www.davidsherwin.com/success/

Flicker  https://www.flickr.com/photos/29623457@N02/5176568774/in/photostream/lightbox/ 

https://www.flickr.com/photos/29623457@N02/5176569202/in/photostream/lightbox/

google creative workshop 80 challenges to sharpen your design skills pdf 

http://oliur.com/

http://abduzeedo.com/perfect-office-astropad-digital-protractor-and-office-ideas

https://books.google.com.bd/books?id=mTSNYmfEIykC&printsec=frontcover&dq=Creative+Workshop:+80+Challenges+to+Sharpen+Your+Design+Skills&hl=en&sa=X&redir_esc=y#v=twopage&q&f=true