https://www.baeldung.com/ https://www.baeldung.com/ has been my lifesaver. It's usually search "baeldung spring <whatever I am trying to figure out>" and I get

https://www.baeldung.com/ https://www.baeldung.com/ has been my lifesaver. It's usually search "baeldung spring <whatever I am trying to figure out>" and I get a nice article telling me how to do it but also explaining it as well so I can have the knowledge in the future. I think the main author Eugen (there are many now) has a nice book.