is there a specific book that you recommend i should buy because most people are criticizing these books and i'm new to
SCWCD with no experiance with it.
I am not sure which web component certification (version 5 or 6) you are interested to take. To attend older version (OCP JWCD) there are plenty of study books and simulators available, but for new version (OCE WCD) there are very few. You may list out all from Coderanch FAQ list or from other online blog/articles and decide yourself a good one by others recommendations.