pass - Password Manager
1. What is it?
A tool to manage your passwords. It's available on your laptop and your phone. Here is the official website.
2. Why you should care?
Using insecure passwords or the same password is the most common privacy risk. A Password manager is one of the best ways to mitigate that risk.
3. How to set it up
The tutorial is for Ubuntu (or Windows with WSL) and Android. pass works on Mac and iOS so you'll be able to find the instructions online.