Hey Kendra, I would say you are already in a good place being the admin and the local problem solver. That is exactly how I started 9 years ago receiving purchase orders in a warehouse when my company moved to NetSuite. I started building saved searches, and quickly got management's attention. Fast forward today I am an implementation consultant.
If you don't already have access, press your company for an LCS pass which will give you access to a library of videos on various NetSuite features.
You can be self taught. To learn formulas, you just need to dive in and try things, it's one thing to read how to do something, it's another to apply it. I don't feel learning scripting is necessary for an admin, but if you could do both, you'd be very valuable. What would be helpful for you to learn related to scripting is understand how to handle scripts from an admin standpoint, including reading execution logs, identifying failures, and fully understanding how your scripts manipulate your system.