My name is John, and I've written this unofficial guide to help others avoid at least some of the hassle I experienced with becoming a resident of Gran Canaria.
This guide is by no means official, and all of the views expressed herein are my own. Do not quote any content here in any official context, nor use it as a source of truth without consulting other resouces.
The guide was originally intended for members of the Live-it-up Las Palmas community on Slack, so the context is a little Las-Palmas-centric, but the general ideas should still be helpful for the rest of Gran Canaria and other Canary Islands.
Please feel free to contact me on Slack here with any comments, questions or thoughts. Most of the information has been compiled from discussions on the #help_work_professional_hr_tax_nie_networking channel, so feel free to join it.