What words to study and from where?

<p>Hi. Im kinda average with my vocab, but I want atleast a 720 for my CR(fingers crossed!)...Ive got many lists of words, like barron's and wordsmart etc. But I can't choose which one's to study and how much to study....HELP PLEASE!</p>

<p>I like the Wordsmart book. What's wrong with studying that first?</p>