Ha ha ha I remember those! My mom was convinced that I wasn't going to college since I wasn't preparing or doing some sort of CollegeBoard cram school. I ended up scoring > 2000 (new version). The same thing went for the AP tests, though I did well on those more out of fear since my dad had threatened fury for paying $80/test. For the PSATs I would recommend some sort of studying regimen. I didn't really realize what I was taking (the potential) when I took them, so I missed the National Merit scholarship by a margin, and my guidance counselor told me that I couldn't retake them. As for the APs, I would definitely recommend taking all the tests for the classes you never want to see ever again at university. I was exempt from the language requirement, freshman writing and all of the history general education / liberal arts requirements for my scores on the test, which saved me time later when I was switching majors.
So yeah:
-Take APs to save time (and mandatories) in college
-Study hard for the PSAT so you can win free money
-Blow off studying for the SAT (since by now if you did the previous you will know the exam). Like Ermine, the lack of stress and trivia rattling through my head really helped me do well.
-DO NOT repeat your SAT test. That's just pointless. You will spend money and time and probably get the same score. Ignore the Kaplan flyers.
-Oh, and apparently the day before the exam someone told me that indenting in the new SAT (like, a substantial amount) was key to the graders' scoring, for some reason. Apparently, they enjoy a good looking page for the essay question. (Worked for me
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)
Finally, if you want to get out of freshman writing, be sure to take AP English Language; NOT Literature, which can get you out of one of the literature general education requirements. If you test well (4/5) in enough AP exams, you can arrive at university with up to a semester's worth of credits, which is helpful if your goal is to graduate early, or just fuck around a lot.