guys need help regarding applying abroad

anyone giving AS maths in this oct nov?

I’m a private candidate , I’m taking full A levels(I haven’t taken AS levels) in maths and further maths ,I’m following Edexcel board, now what I’m struggling with is that idk the modules I should start studying like does taking a full A level in a subject means that i got to study both AS modules and A2 modules as separate content like finishing the AS books and then then A2 books or there are books that contains full A level content or what?