There are many great YouTube tutorials on getting started with Notion. I've put a few of my favorites here; yes, I've watched them all, and utilized what I learned immediately. In addition to these videos, you can also use the official Notion Guides & Tutorials. Their guides are incredibly well-produced and effective.
Averie Bishop aims this video specifically at law students. It gives a very basic overview of what Notion can do, and how you can use it to stay organized as a student. It does not show you how to actually operate Notion.
Wesley Anna aimed this video at those who want to know how to quickly work in and with Notion. If you can absorb this information, you will soon be doing a lot with Notion.
Kevin Stratvert, a master technology instructor, created this advanced beginner tutorial for using Notion. It is 30 minutes long, but you will feel so confident at the end, and it will--nearly guaranteed--save you hours and hours in just the first month or two alone.
Pro-Tip, all of Kevin Stratvert's technology videos are outstanding. If you're struggling with any Microsoft product, check and see if he created a video about it!
deb smikle's fun explanation of how templates work, how you can use those created by others, and how to create your own! She also covers commands, keyboard shortcuts, and organization tips.
Whether you are looking for an overview or a guide to something specific, Notion almost certainly has help for you. The help materials easy to search, and almost as easy to understand.
You've been using Notion for a while now. Or maybe you're neurodivergent and just like doing a really deep dive before getting going. There are a lot of videos on YouTube demonstrating some of the amazing things Notion is capable of, that you may be unaware of. You probably don't need to watch any for Notion to work well for you in law school. In fact, if you haven't been using Notion regularly for at least a week, they may be more than you can absorb right now. When you're ready, you can search for Notion videos on YouTube. Some focus on aesthetics (unimportant if you're not actually using Notion), project management, or using Notion specifically for taking class notes, to name a few.