Need Help Please!

<p>so I am a junior and just recently took the SAT for the first time in april.Got my scores back and they went down 100 points from the psat.However,i did not prepare at all for either test.What do i need to do to raise my score at least 300 points?I just purchased the bluebook and gruebers book.I am taking the act and sat in june.Please tell me what i need to do.Thanks.</p>