I have a personal account that I'm meticulously careful about (but still terrified of). I also have an account with L̵i̵n̵u̵x̵A̵c̵a̵d̵e̵m̵y̵ A̵C̵l̵o̵u̵d̵G̵u̵r̵

I have a personal account that I'm meticulously careful about (but still terrified of). I also have an account with L̵i̵n̵u̵x̵A̵c̵a̵d̵e̵m̵y̵ A̵C̵l̵o̵u̵d̵G̵u̵r̵u̵ PluralSight: and while the courses are very variable (and mostly exam cramming focused) it has their Cloud Playground as a super nice feature. I get four hours to play around with setting things up and then it will all get automatically torn down for me. There's no cloud bill, just my subscription (I think that's about $400pa at the moment - can't check right now as annoyingly their stuff is blocked by our corporate network!) It has a few limitations, but none that have been problems for me with exploring stuff so far.