There really isn't anything good as far as sample tests. I paid 35 bucks for some electrical aptitude test prep book and it wasn't even close. I studied my ass off and didn't even finish the test. I did answer most of the tough ones and I lost track of the time.I aced the reading and I think that carried my through. Know your algebra and don't work every answer trying to eliminate it as wrong. Thats how I ran out of time. Once you find the right answer go on. There isn't enough time. E maill me if you have any other questions. Good luck