I don't think it really matters what type of science you start with, but I suggest that you start with something that involves math, since you just finished all the courses. Advanced math is usually involved in engineering, chemistry, and physics, but not so much biology. Ultimately, I don't think that there is a "more important" study of science, as you should study what you think is more important and what you might want to explore in the future.

Once again, I just recommend you should start with something that has some advanced math, just to keep your mind fresh

-Jake

Thanks Jake well finish all the math course just really got down to ap calculus determinate higher derivatives then feel the need to revise I really love math and I used to love playing with the molecular models. I was the only one at the age of 12 I made a robot arm move and a hydrogen atom symbol out of the molecular models, I gave up learning because well as trying to get a good job here in the uk, well It might be the same the rest of Europe but this site put the faith in learning back in me, its always good to revise and keep my mind fresh as you say.

Anytime, I wish you luck!