I learned so much in these courses that cover OOD, design patterns, and architecture in a real world and practical way. I found it one of the best taught courses I've taken.
I'm also a big fan of Bitwarden. I use it on Linux, my wife uses it on macOS, and we both use it on iOS. It allows us to share passwords seamlessly across all platforms.
I also like the command-line app that I can integrate into dmenu and the fact that it allows self-hosting.
I'm glad most a lot of these comments are saying DDG works for them; I still have a lot of issues with the search quality and switched to Startpage a while ago which uses anonymized google results.