Here is an awesome curated list of open-source projects and CMSs built with the Laravel PHP framework.
You can download them, enhance them, write tests, add new features and find the right solution to your problems!
We will learn how to use Socialite - a new Laravel 5 feature - to let users log in using their Facebook account.
After learning this recipe, you may apply the technique to authenticate users with other social networks (Twitter, Github, Gmail, etc.
One of the best ways to learn Laravel is looking at the source code of good built apps. Here is a list of premium scripts that you can get to learn, or use them for your production sites.