I'm using Upptime to monitor my deployed site you can find it here.
I can access my CMS from here
Next js docs: https://nextjs.org/docs
I'm using https://headlessui.com and https://tailwindcss.com
We are managing node versions using Volta. Follow the link to install volta, then your machine should automatically use the correct node verions, or download it if it isn't already present on your machine.