أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Instead of books..,
go to www.w3schools.com/css and check the basics..
if u need book then
Book Name: Beginning CSS Web Development: From Novice to Professional
Author: Simon Collison
Publication: Apress
i think it is good start ,
Best CSS book for beginners is
HTML-CSS-Design-Build-Websites
it contains alot of illustrations and exmaples, it is focus on practice
also you can start learn and practice CSS for free from
http://www.w3schools.com/css/default.asp
also you can get certificate if you pass test exam
don't refer books instead refer http://www.w3schools.com/css/