oxide1
Re:Ask HN: Tool to create personal Wayback Machine
on Wednesday May 19, 2021 @06:33AM (#27206745)
https://pinboard.in/ is one, but it's paid.
Re:Ask HN: How do I learn Data Structures and Algorithms
on Wednesday May 19, 2021 @06:22AM (#27206661)
Introduction to Algorithms by Cormen et al (colloquially known as CLRS) is a pretty good place to start.