Yasas Sri Wickramasinghe put together a great list of extremely useful tips and tricks in Chrome Developer Tools that you may not have seen yet, such as the CSS overview tool, and the CSP violation detector.
Sam Scott and Graham Neray posted a useful post on the Stack Overflow blog describing the best things to do or watch out for when developing or deploying a REST API.
Justin Etheredge posted a wisdom post with 20 software engineer lessons from 20 years on the job. My favourite of the list is #20: Always strive to build a smaller system.