Teaching is best done when a person has crystal clear concepts of the subjects that they teach. Learning is best done through spaced repetitions. Learning something also requires a lot of heart and courage. Once something is learned, nothing and no one can take this away from a person. People usually focus on the hard work required in the learning process, but if you truly enjoy a subject, time itself melts and hard work becomes involuntary like breathing.
I myself have done A-levels in physics, chemistry and mathematics. One thing I have learned throughout these years is that application of knowledge is a lot powerful process than knowledge itself, in other words randomly memorizing a bunch of text from some random textbooks, and I strive to teach my students to focus on this. This is how I am different from some other people out there
Chemistry (Grade 8-A2 level)
Physics (Grade 7-A2 level)
Computer Science and Engineering (Bachelors/Undergraduate)
Excel (Basic) (Grade 7-Diploma)
Math (International A Level)
No experience mentioned.