A list of cheat sheets that you as a developer/techie will find very useful. You can find downloadable cheat sheets such as Keyboard short cuts, popular commands, and more.
In this cheatsheet, you will get access to a list of common HTTP and HTTPS Status codes. As a Web Developer, it's good to understand the errors the server or the client returns.
In this article, you will get a list of useful commands when working with git version control. This will allow you to quickly manage your repositories in quick steps.