hi, first of all work on your grades. highschool grades should be really good. Then participate in extra curricular activities at your school. preferably ones that align close to your field of interest. SAT is an exam that measures your aptitude. It’s math and english and you can prepare for it on https://www.khanacademy.org/SAT use khan academy to also work on other subjects you find difficult. It’s completely free. For US universities you’ll need SAT and an english proficiency exam (TOEFL, IELTS, Duolingo). Then you’ll use the common app (https://www.commonapp.org) to apply to US universities. US universities have financial aid. They help you pay for tuitions. Some of the universities have 100% financial aid policy. This means that if you demonstrate need they will cover 100% of what you need. here is a list of colleges you can apply to https://blog.prepscholar.com/colleges-that-offer-complete-financial-aid mind you common app only allows you to apply to 20. So choose wisely. You’re still young and you have time to prepare very well. watch a lot of youtube videos to understand clearly. Your worry should be getting into these universities, and the financial aid will follow. join https://t.me/curiousiTea that’s a very helpful channel. Also join bright scholarship channel and opportunities corner channel. Best of luck!