📖 Mobile First Web Design
/
Getting Started
/
Where to find references?
MDN and W3C
Googling the topic on the Internet may be fast to get some understands on specific topic. But if you are seeking documentation, here are some suggestions to high quality documentation.
Some desktop applications may provide quick access to these documentations. For example, in my Mac, I use Dash to have quick access to the spec without opening the browser.