Congrats on your new GF! I still remember my first day, and I’m so excited for you; you’re at the start of a great journey. 
The GF is easy to operate compared to other lasers, but there’s still a steep learning curve to understand how to get the most out of your machine. I’m a jump both feet in before looking where I’ll land kind of gal, but I strongly encourage you to read all the official safety and cleaning info, because lasering the wrong material can be very dangerous, and you’ll see some unofficial cleaning “tips” out there that will damage your machine.
Now that the obligatory safety talk is done, here’s a good link to help you get started. (I’d suggest looking at the “learn by doing” section first.)
This is REALLY good, and is specific to your question.
And I really like this explanation of what each setting does. Even if you plan on starting with the auto settings, it’s important to understand what the settings do and how they impact things.