I'm not sure on meaningful qualifications for web design, but a good knowledge of (my)SQL, PHP / ASP, java script and flash seems to be pretty much obligatory these days.
Whatever course you settle for should cover as many of the above as possible.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?