Hi Hloong99,
With a June Test Date, you have plenty of time to study for the GMAT - which is good. Depending on your Score Goal and your availability to study, you might be able to 'play around' with your studies at first. If you'd prefer to be 'efficient' right from the start though, you would likely need a more formal Study Plan.
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on your timeline and your goals:
1) What were the Quant and Verbal Scaled Scores for this 500?
2) Going forward, how many hours do you think you can consistently study each week?
3) What is your goal score?
4) When are you planning to apply to Business School?
5) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich