Permit Test in Florida?

Okay, so, today I took my permit test. I passed the road signs portion of the test and didn't miss any questions but then I took the road rules portion of the test twice and missed five questions so it automatically failed me. After that I came home and Googled the answers for all of the questions in the back of the Florida Driver's Handbook and now I'm studying those.. I was just wondering if I study those do you think that will be enough for me to pass the road rules portion of the test? It's 71 questions to study and the actual test only has 20 questions. Thanks in advance!