I have been using Notebook LM for over a year now. It's not my favorite, but I use it mainly as one of my knowledgebase. I have uploaded 38 documents to create a "notebook" which is basically trained on me, my brand, and my business. From there, you can prompt the AI like any other AI, but now it is trained to know you.
Two of the features I like are the Audio Overview - a podcast wherein AI talks about you, and the Mind Map - a visual map of you and your brand. When you click on the links, it goes directly into the knowledge to support that particular item.



