i am starting my AS courses after 2 weeks i chose chemistry , biology , maths and arabic as a first language , is there anything specific i should do or prepare , give me any advice or talk to me about your experience , is there anything i should avoid doing / is there something specific i should do for a certain subject of those , give me your DO's and DON'T'S .
if you could go back and give your younger self an advice (pre A levels) what would it be ?