IT Resources
This is a dump of links to resources like websites, apps, and tutorials that I have been using. The list is ordered by systems and I have added relevant notes to some of the links.
Group Policy Search - gives detailed context to different Group Policy options https://gpsearch.azurewebsites.net/
ShellCheck Linter - program for checking Bash/Shell scripts https://www.shellcheck.net/
SPF Record checker - also will do DKIM and DMARC https://dmarcian.com/spf-survey/