This article is talking on designers but I think most of the things there apply for coders also.

If you read it now and get it – you will be ok, else you will learn all those rules by own in the future.

Read the full article here…

http://www.onextrapixel.com/2010/08/18/10-questions-from-modern-web-designers-answered/comment-page-1/#comment-7981