Hi Rachel,
Nice to meet you online and it’s great to hear that you’ve found the Trainer helpful —
The rules and scope of the LSAT (that is, what is being tested, and, consequently, how you are likely to score) do not change from administration to administration, but the style and feeling of the test do change a tiny bit over time, and so more recent exams will be just a bit more representative of what you will experience on test day —
So, it is definitely a good idea to pick up newer tests for additional practice, and, in general, it’s a good idea to save the most recent exams you have to be your final practice before the exam —
Hope that helps and good luck with the rest of your studies — if you have any follow-up or need anything else just let me know —
MK