Remember...you need at least 100 hours of study time to be ready for the test. Spend 20 hours reading the STC series 7 material, and at least another 80 hours taking tests. I took about 40 or 50 practice tests (the 125 questions tests) and i passed my series 7 the first time. I got a 76%. Just take the practice tests until you get 85% or better on each test. Even though i got 76% i feel like i got lucky. When i was taking the practice tests I was getting as low as 72% on some of them so thats why i recommend getting 85% on all the tests so you are sure you will pass. Dont bother with the classroom or tutors. 40 hours in the classroom and they will still tell you to study another 80 hours at home. When i was first studying the material i felt like i needed a tutor too, but since im such a cheap skate, I just pushed as hard as i could and i am so proud that i did it on my own. You can do it bro, just study the STC book and do at least 80 to 100 hours worth of tests. (yes you will be sick of it after the first few weeks.) I got thru by doing two 125 question tests each day. 2 months later i took the test and passed.
Good luck man