Hello there, I am in class 9th now and I want to prepare for my college. I am thinking to apply for Harvard.

First off, hats off to you for taking initiative in the college process so early on! It's a long, arduous process that some high schoolers don't even think about until their junior year so the fact that you're searching for information to help you out is a great first step.

In 9th grade, it's all about building a foundation. (I'm going to assume that you have not completed any courses for your high school transcript as most usually haven't by freshman year except for some) Freshman year is when you start taking high school courses such as Algebra I and English I as well as a few others. Right now, your job is to stay focused on getting good grades in these courses. This is where most people mess up as they joke around their freshman and sophomore year and then their transcript and GPA are lacking because of it. As you want to go to Harvard, in order to compete with other applicants, I'd say have mostly As in these courses, sprinkled with some Bs here and there. Remember that you don't have to be perfect to get accepted into Harvard.

Another tip I have for you as a freshman is to start ACT/SAT prep NOW. A lot of people may argue with me and say oh, it's too early, but I have a feeling you're a pretty ambitious student like I was in 8th/9th grade. Because I started this prep early, I now have a leg up to the rest of my fellow rising juniors. While they are struggling to get benchmark scores, I'm simply brushing up on material to get the score that I want. I'd highly suggest starting the prep at Khan Academy. Since you're only a freshman and probably haven't taken the SAT yet (unless you participated in the Duke TIP program that's available to 7th graders), it won't be personalized yet, but if your school offers the PSAT to freshman, you can link the two accounts and start prep from there.

Hope this helps! :) Good luck with the start of your high school junior; it's surely one you'll never forget.