Hi!
Hereis some good reading for the fundamentals of designing for the laser.
This is a bunch of tutorials the company and community members have put together.
It may seem intimidating at first ( it was for me), but it really isn’t difficult, and you’ll pick up the basics quickly.
To get the most out of your glowforge, you will wast to familiarize yourself with a design program. Inkscape is a popular choice, and you will find tutorials for it and other design software in that link I gave you.
As @evansd2 said this place is the best accessory for your new laser.
There are also many YouTube tutorials for specific tasks.
You have some reading in your future! Have fun!