USA colleges

Is anyone thinking to apply to universities overseas like the US? If so how do you even start? Ik i would have to register to sit the SAT but I've heard US colleges are really big on extra credits and idk what extra credits I have since i study a-levels in England. My school tells me nothing about things like this and have the worst support/admin ever so i'm so confused on where to even get started

Do you mean extracurriculars? Commonapp (the US version of UCAS) is open for applications for 2025 entry so you can make an account and try adding schools you might be interested in to see what essays they expect you to write.