In my review of the Sony A1, I’ve added a 17-page guide to configuring the Sony A1. I haven’t covered everything, but what is there should be helpful for anyone settings up the A1, and particularly those new to Sony. It’s part what to set, and part why to set things a certain way.
Start with the overview: Overview of Customizing Sony A1
Quick start: Cheat Sheet Settings for Sony A1
UPDATE: I’ve added a downloadable settings file: Sony A1 downloadable settings file