https://www.coursera.org
this site offer courses (free and paid) and valid certifications
Show HN: Curated List of Online Learning
11–12 of 12 posts
Re: Show HN: Curated List of Online Learning
#12www.freecodecamp.com is really good and is free. I haven't seen it in your list. I done some of they're stuff for front end/Javascript development in 2016, now i see they have different paths for back/DevOps/Qa. Also they have a really good YouTube channel with lots of introductory videos