Hi Meghan,
I would agree with you - we cannot live without Fusion. This makes work less cumbersome for our end-users when we can automate.
Implementing Fusion for us was not too bad. We did have a mix of consultants and training to get us started. But for the most part, we were able to pick it up pretty quickly. We will still use a consultant for our more difficult scenarios instead of us spinning our wheels.
Fusion is managed by two people in our company. We have about 15 active scenarios and about 15 more that are run as needed (meaning we click the run button when needed). For the two of us, it took about 6 months before we were really understanding all of the modules. A great resource for learning is make.com - it was very helpful for us. The Adobe training on fusion helps understand what is possible, but when we took it, it lacked the understanding of each module.
At the last Adobe Summit, we had the opportunity to talk with Ewan and took his labs as well. This was extremely helpful in making us more comfortable in using Fusion. Ewan is a great resource inside of Adobe. The one thing we would have done differently is better documentation in how we set up the scenarios and why. Ewan gave us a template to use for documentation that we have used since. It is very helpful in understanding each Scenario.
Hope your journey goes well - let me know if you have any additional questions. Once you get used to Fusion you will go Scenario crazy (hahaha).
Scott