2023
freeCodeCamp - Web Development with Python Tutorial – Flask & Dynamic Database-Driven Web Apps 0:00 of 4:38:03
    https://www.youtube.com/watch?v=yBDHkveJUf4
2021
Dudar - Flask for Beginners
    https://www.youtube.com/playlist?list=PL0lO_mIqDDFXiIQYjLbncE9Lb6sx8elKA