Erika Heidi has posted the third part of her beginners guide to working with Puppet/Vagrant for development environments. In this latest post, she focuses on facts, conditionals and modules.
Finishing this guide to Vagrant and Puppet, I would like to show some advanced puppet resources. As I said before, Puppet is really powerful and extensive - I'm covering just the main concepts so you can have a good start point for creating your vagrant boxes.
She talks about the concepts behind facts first, pointing out that they're similar to variables, except that they're pre-defined. Conditionals let you do some basic logic and modules make it simpler to split up the functional pieces of the Puppet configuration into reusable chunks. She includes some code examples for these and how to set up your directory structure so you can create and use modules.