How to study for the PSAT?

Hi, I am a highly motivated student. I have been wanting success my whole life and dream of becoming successful. I am VERY interested in the fields of computer engineering and computer science. Since 8th grade I have wanted to get into a great college. I am taking all honors cles including honors Jazz band as an extra-curricular activity, and I plan to take AP cles. I am also a committed baseball player. I have just started 9th grade and just finished my first semester with straight A's. I plan to continue to earn straight A's throughout my high school career. The school I am practically dieing to go to is MIT. I am a well-rounded person and I am pretty sure I have what it takes. The only problem is money. My goal is to become a National Merit Scholar. To get this scholarship, I need very high scores on my PSAT. I am a freshman and I am willing to start preparing NOW. Any suggestions for studying? Please do not say it is too early because it is never too early. I am a highly motivated writer, thinker, and student.