I can hardly believe that in 2011 I made this silly little blog about the ochem video site I was setting up. It was the original project idea that drove me into web development and software engineering. Funny enough I have been iterating on this same project idea over the years. The site went from a plain html and css site I wrote in notepad to a wordpress site, a drupal site, a ruby on rails site, nodejs, server rendered react, back to wordpress and finally on to nextjs.
Truthfully, I gave up on the idea for a long time. I thought the site was a good curated list of problems found on youtube but that simply searching for the topic name was probably enough for users who were visual learners and wanted that type of content. But in the last few years it seems Youtube has destroyed their search results. I'm sure it boosts their bottom line by keeping users on the site but from the point of view of a student looking for learning material, it is very bad. A search for a specific topic used to return pages of related content. Now it shows 2 or 3 videos that have the best analytics for retention and then some combination of clickbait and unrelated content. Funny enough youtube, owned by google, now needs an external search engine if you are searching for educational content. Check out the site here, https://www.practiceproblems.org