Spinach is really easy to grow don't worry! I'll snap a picture of one of my gardens later for you- I just threw the seeds everywhere with no method. (The no method, is a method however just to be confusing lol)

I don't believe that gardens need maintaining. It should be limited interference according to permaculture which I have a certificate in. I'm happy to help you get it going! Maybe I can come by when I am visiting and help you (not this time as I will be rushed but next time!)

I'm excited to read this- I want to grow some moss myself soon =D