What Do Self-Taught Web Developers Wish They Had Known Before They Started?

A good article

This is an article about how NOT to learn code and how to learn code the right way by a famous guy Quincy Larson, the one who started freeCodeCamp:

https://medium.freecodecamp.com/a-cautionary-tale-of-learning-to-code-my-own-eddb24d9d5a7#.b5jgvci03

Firefox Add-ons

Ever wondered how browser extensions are created ? Here's a tutorial for knowing how, with respect to Firefox!

https://blog.mozilla.org/addons/2014/06/05/how-to-develop-firefox-extension/

Developing using one the techniques mentioned in the above article is using Add-ons SDK :

https://developer.mozilla.org/en-US/Add-ons/SDK