I am a very qualified tutor in teaching mathematics and physics with guarantee in understand all what you need.
What I believe that when you have a strong background about the basics, you can crack any theory in all subjects, it is all about the basics and fundamental.
Don't care if you spend a long time to understand the basics because it is the most part in your life which make you success or fail then drop.

Actually, I used to help students in both middle and high school to learn Math, physics and also programming for free just to know if my methods in teaching are efficient or not;
honestly, I have seen unbelievable results. all my student were so much happy and also I was so much happy to see that in their eyes !!!.

Believe me, all the subjects are easy, it is all about your way and method of thinking!!!