I think I paid about $35/subtest for the OC Ed books. I think they are worth every penny, especially since I haven't found anything else out there that even compares to the number of examples and good explanations that they offer. I agree with UCLACareerChngr particularly in that they help narrow your focus, rather than teaching you broad concepts of math. The books are structured to follow the exact guidelines on the CSET website. The other program I tried that I purchased online, ace the cset, was pretty worthless and cost me $40 I think for a 90 day subscription. Total waste of money. I've also heard bad things about CA Teaching Solutions from several sources, so pretty much all of those online "quick hits" pay websites are not productive. My advice, is to focus on one subject, I would say that Subtest 2 is much easier and the material is more manageable than the others. If you've already registered for 1 & 2, spend as much time as you need (I took 4.5 hours) to complete Subtest 2, and then just use the last half hour or whatever remaining time, to look at the types of problems on Subtest 1 -memorize they structure as best you can and use that to study for next time. Suggestions for Subtest 2: 1. Given the surface area of one object (ie. pyramid), pretend that the object is filled with sand and dumped into another object (i.e. hexagonal prism) and you know partial dimensions for that object as well. How high will the sand go? 2. There are a bunch of proofs with fill in the blank multiple choice answers. The structure is: Statement/Reason and there would be 5-10 line items and you fill in the blanks. Pretty easy to figure out most of the answers the day of the test, so long as you are familiar with terminology like SAS, AAS, SSS, etc... and some parallel theorems. 3. chi squared. I'll post more as I think of them. Good luck. If anyone has similar suggestions for Subtest I, I'd love to hear them.