I stumbled across this Flask tutorial series by Julian Nash on youtube and it was really really good. I made this post because this dude has \~5k subscribers and he definitely deserves much more than that cause the tutorial covers what are imo real world use cases/scenarios of flask. Please do check it out and see for yourself.
Also, I am sure there are a lot of tutors/teachers/tutorials that are often overlooked whenever anyone is asking for suggestions to learn a new topic, in this case Flask. I was hoping people can also comment their own list of tutorials they feel have been overlooked/that are underrated/ are "hidden gems" and maybe help increase their audience and support them.