Waiting for my RG28XX, what to do meanwhile?

Good morning everyone. I'm waiting my RG28XX from AliExpress,and I wanted to prepare an SD with MuOs. As I've seen in YouTube videos, it should be easy to install MuOs with Rufus. I've also download the Tiny Best Set 128 to put in another card. I haven't understood properly how to add boxarts, but I'll search for more tutorials. What are your suggestions to do next? Any particular "best settings" inside the console when it arrives?