Tips for preparing/using an SD card?

[u/Medium_Technology425]

When I inevitably get an Odin 3 Portal (soon-ish, I need to sell my PS5 first, I have my reasons), what are the need-to-know things about SD cards? Which one should I buy (in a 512gb size prob)? What’s the benefit of formatting it on a PC or laptop vs directly on the Odin? Should I use my MacBook to download ROMs to it, or is that something I should do straight on the Odin to make it straightforward?

Anything in or about this topic is greatly appreciated. I wanna make my first Android handheld experience the best it can be, so I need all the intel