<p>use sparknotes act prep book, it help me bring up my score of 21 to 26, practice test help a lot too. for the reading, just read a lot of books, but on the second time i took took the test i got a 30 because i just took my time on the first 3 passages and guessed on the last one; it's risky, but if done properly you're sure to get 27+. </p>
<p>Also cambridge has good ACT prep book. there is noway to improve the science part.</p>
<p>i am waiting for my june 10th results, hoping for a 30.</p>