Hello! my mother recently got this stacked planter thing and I want to know what to plant, preferably edible stuff

Yeah I guess that about is a good title, images of the planter with a pepsi for scale above.

For more context I want to start practicing gardening with this type of set up, I know a bit about normal gardening from watching my mom but not much, I want to know what to grow and also a basic information on how to grow stuff. I will be moving out end of the year and with that I will be taking this because I want easy access to fresh herbs and other edible plants, any ideas for things like herbs or even basic vegetables if possible with this and with some notes about what they'd need and where on the tower you'd suggest would be nice, also suggestions on soil types and what I have to do to maintain nutrients and stuff would be nice too.

Thank you for reading my ramble and thanks in advance for any plant ideas or advice!