OneOfMany touched on a good point.
There are definitely test taking strategies based on the way they grade the test, which may have not changed.
No one is expected to answer all questions. You are graded on a percentage of correct answers from the ones you choose to answer. Basically, if a question is really hanging you up and you have no clue on how to even eliminate answer choices, then move on to the next one. You would have been preserving your score to that point.
Another thing to consider is some of the answers are obviously not the ones to select. However, your final two answer choices may be very similar and carefully constructed to be similar.
From what I remember in high school, sometimes they recommend skimming the answers first and then reading the text (for the Reading portion), and save time when you realize you have found what they are looking for.
You can also prepare ahead of time for the Essay portion of the test. On test day, it does not have to be your first/rought draft. You can think about what you may want to write about and then rewrite it to ensure you did not make careless mistakes.
There are also sample PSAT/SAT’s you can find online or purchase in stores.
Again, Hatzlacha!