Installing GNU/Linux isn't the easiest thing to do, just ask the founder of GNU, Richard Stallman.
If you can copy and you can paste you can install Debian and keep it up-to-date.
This walks you through a bare-minimum Debian installation and turning it into an extremely efficient i3 DWM powerhouse.
Source files for installation are provided here in the GitHub repo.
Step-by-Step Debian Installation for Android Development
Step-by-Step Guide to Creating Debian Stretch USB Installer with UbuntuComments/Suggestions and Questions: https://github.com/andDevW/debiandroid/issues