This videos are so helpful for my electronics class. Thank you very much! please continue posting if you can!

Dear Mr Mark, I hope you are doing well. Thanks a lot for these excellent videos which are brief but contain so much knowledge and deep understanding for the subjects. Are you still continuing or plan to continue these lectures? Best wishes.

Oh my god your videos was saving me until i realized your last video was for bloody 3 years ago. Please continue with more transistor examples.🇮🇷 im from Iran BTW

Thank you very much!