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I publish mathematics and physics educational videos on this channel from the advanced high school level to the university level. 
I have taught mathematics and physics for over 30 years, from high school to university. I have held a Ph.D. in mathematical physics from Stockholm University since 2017. I am the head of the Mathematics Department of the Arena Academy, a Swedish high school in Stockholm.  I also partly teach at the Mathematics Department of KTH, Royal Institute of Technology, Stockholm, Sweden, and the Physics Department of Stockholm University.
The following is another YouTube channel on which I upload my lectures at Arena Academy.
https://www.youtube.com/c/MathematicsatINITCollege