Google has put together an amazing resource for web developers, centered around responsive development. The great thing is, it’s open source. This means that experts from around the world have been collaborating to bring together a set of resources for web developers, and you can contribute too. The code for the project is all on GitHub.
The link to the resource is: https://developers.google.com/web/fundamentals/
The topics covered range from best practices for the look and feel of your site to optimizing performance for mobile devices.
If you work in the web and have some great resources of your own, go ahead and leave a comment.