Great work - but 150+ websites sounds quite overwhelming! My suggestion would be to classify them based on format.
For me - podcasts (for when I'm travelling/commuting) and interactive video tutorials work best when I'm trying to assimilate new concepts in a focused manner.
People interested in this might like a project I'm working on - https://www.findlectures.com. This is a search engine designed so that you can explore and discover interesting talks.
What's the opinion of Project Gutenberg, these days? Works that are out of copyright, but there are many of those that are pertinent to a broad, lifelong education.
Although I see now that they, too, are blocking access via VPN. Sigh...