580 to 700+ need your help!!!

There is no point getting confused with bundles of books and ending up no where. First try and get the grasp of all the basic concepts and formulas in quant. Try your hand with OG12 - Obviously this is the bible. Remember that for quant the OGs are only basic level that would not get you 45+

Take a concept each day and practice around 30-40 problems in that. Try to learn the concepts and make notes. Key is not the number of questions but the concepts themselves. In Gmat I dnt feel there are much of varieties out there. You can study through GmatClub practice problems topic wise. (home page right bottom side of Gmat club forum). Try to note various methods that other users have adopted in solving a single question and learn the best that suits you.

Once through try 700+ level questions and post your own explanations. After that you must attempt gmatclub maths test. These are awesome.

Hope this helps !!! Trust me that would take you to your dream gmat quant score ..