Hey #Linux people.

⚠️I am not techy - please keep this in mind if replying.

I got a cheap Kindle Fire HD 10 for a LARP. I used it as is yesterday (cos time) but I would like to put Linux on it so it's more customisable.

I just need it to edit and view PDFs, make notes, and view web pages.
Ability to connect a portable keyboard would be great but not essential.

Is this achievable for a non techy chronically ill human?