Q:

html/css/js best practices

Possible Duplicate:
What should a developer know before building a public web site?  

Are there any books or resources on html/css/js and web design best practices? 
There are plenty books which just learn the basics - syntax and other stuff which is not quite difficult, but I can't find use cases, real examples, how professional desginers use them. 

A:

HTML5 and CSS3 for the real world
Is a very recent book on those topics.  
As for actual modern best practices, they change so rapidly any book more then a year old is outdated. 
However for JavaScript you can never go wrong with The Good Parts
I would personally advice you to use mentors and internet resources rather then books. 
The JS SO Chat room does welcome high level language-agnostic web design questions or will at least redirect you somewhere useful and so does the PHP room. 
Comp lang JavaScript is also a solid resource of information and so is MDN Learn

