1. Acquire a certificate of good standing for my LLC from the Delaware Secretary of State.
2. Register with the California Secretary of State as a foreign LLC (out of state LLC), which required the aforementioned letter of good standing.
3. Acquire a business license from the city my LLC operates in.
4. Pay a franchise fee to the California Franchise Tax board.
5. Figure out what other fees I'm on the hook for. I wasn't able to figure this out on my own and am currently working with an accountant and lawyer I found after incorporated to help me do this correctly.
There's probably going to be a few other odds and ends. I operate out of my home and only employ myself, which saves on a lot of other paperwork and logistics I'd need to sort out otherwise.