I have gotten all A's in the subjects I tutor in, and I have helped my friends get through the classes with good grades.
I am so glad I decided to ask them for help. I finally could understand the content, and my grades went straight up.
I determine the exact problems they have and come up with many ways to try to get them to understand the topics.
I have worked with students in elementary-high school.
Get a teacher that can teach in many different ways, so if you don't understand one way you can start over with another way.