A few weeks ago a buddy asked me for recommendations for electronics tutorials for his teen son and friends who've gotten really involved in high school robotics competitions. I thought I'd pass my list along for those interested here and would especially encourage everyone to take a look at W2AEW's circuit & scope tutorials. First rate stuff from a natural teacher.
Here's the admittedly eclectic list:
Nearly all W2AEW's tutorials are great! He's a Tektronix Field Engr by day, but a Ham Radio "Elmer" and superb teacher by avocation.
https://www.youtube.com/user/w2aew/For example, here's his excellent vid on Bipolar Transistor Bias Circuits and Beta Dependence
https://www.youtube.com/watch?v=YQlbPGNB-ysMr. Carlson's Lab is also very good, though his vids tend more toward repair - especially of vintage tube toys
https://www.youtube.com/user/MrCarlsonsLab/featuredAussie Dave Jones is entertaining and informative, though I find his shtick and self-promotion a bit tiresome at times. Still, his "PCB Design & Manufacture" series is excellent.
https://www.youtube.com/user/EEVblog/featuredBen Krasnow is a Google Life Sciences Engr who makes amazing stuff like scanning electron microscopes in his home shop
https://www.youtube.com/user/bkraz333/featuredFor advanced RF/microwave teardowns and repairs this site by Bell Labs PhD Shahriar Shahramian is wonderful. Can't imagine how he finds the time to make these long videos...
https://www.youtube.com/user/TheSignalPathBlog/videosAnd for radio repair TRXBench by a German(Hungarian/Czech?) guy is top notch
https://www.youtube.com/user/TRXBenchHave fun!