Thanks for the answers and the Photoshop vector tutorial! Here are a few more resources to help you get started, @OldFrog.
You can always access the most recent version of the Glowforge manual at https://glowforge.com/manual or in the Support area of the App, where you can also find Learn by Doing tutorials as well as Troubleshooting for the most common problems.
Our Glowforge Community has created a wealth of tutorials to get you started using your Glowforge right away, like the one @jbv posted. You can find these in the Tips & Tricks section of the community forum.
The Learn by Doing series has a couple of intros to Inkscape:
You may also find Working With Manual Mode (also part of Learn by Doing) useful, especially the section “Engrave Resolution,” which addresses LPI.
I’m going to close this thread. If you have further questions, please post a new topic.