Lynda.com is a website that provides online training courses in a variety of subject materials. I’ve been honored to work with them on a few different courses at this point covering both PHP and Ember.js. The latest one went up earlier this month, it covers some of the basics in working with PHPUnit, a unit testing framework and perhaps more importantly learning the Test-Driven Design pattern. TDD is one the biggest things you as a developer and software engineer can do to level up yourself as a developer. It takes you from a style of manual refreshing, testing and looking at things to figure out if something worked to instead validating your software and proving it works the way it’s intended. I’ve embedded below a video covering some of the reasons you should use and do unit testing.
If you aren’t interested in TDD or PHPUnit, take a look at Lynda just in general there is probably something of interest for you learn from. Lynda prides itself on producing quality content and it shows both in the courses and in working with them.