Good luck on the 24. I suggest the STC 24 Class. Study consistently, 5 days per week, 2-3 hours per day and at the end of 4 weeks, you will be fine. Make sure to take all the practice exams and PASS them before attempting the actually 24 test. I personally use both material, STC and Dearborn. I like the Dearborn online testing system. Good Trading and now I guess I can say "Good Supervising",
If your firm is not rushing you and you have limited time to study on a daily basis, I might suggest going to the class at the beginning of your study and then study for 3 months and take the test right after sitting in the class for a second time. Here in Los Angeles, the 24 is offered every 3 months. With STC, if you pay for the class you can attend the class as many times as you want within a 12 month period. Good Trading