Answer:
1. Weekly Khan Academy SAT Practice. Gets you used to the questions and format (exactly the same). It also gives feedback when you're done, so you know where to improve. Take at least one practice test half way through the time before your official SAT date. That way, you can know your projected growth. Before practicing, look at these tips for the English (https://blog.prepscholar.com/how-to-get-800-on-sat-reading-10-strategies-by-a-perfect-scorer) and Math (https://blog.prepscholar.com/how-to-get-800-on-sat-math-by-a-perfect-scorer) sections! They really help by giving a guide through your SAT practice!
2. As many as you would like. I don't believe it is open to students under the age of 13 and graduates from high school.
3. Above.
4. Very. Unless you plan on going to a school with a 60%+ acceptance rate. It doesn't hurt to score high, testing at least once each year to improve your score all the way until it is time for college applications. Don't settle less than a 1500. Unless, like I said, you plan on going to a non-competitive school (probably research that to get an idea of what you're aiming for).
5. It is a timed test (try and get used to reading and thinking fast), you only get points for what you get right (so no blank answers), it is a 4-hour long test (get lots of rest and eat a good breakfast that day so your stomach doesn't disrupt other testers!! I've had bad experiences... XD). More specific info can be found on CollegeBoard's SAT FAQ page.
Explanation:
I am a junior and have taken the PSAT twice, the SAT 3 times, and have done extensive practice before each. You've got this!
