Somewhere, long ago, I’ve long since forgotten where, I learned of a technique I like to employ when onboarding new team members, especially into technical roles. It works really well for setting up a development environment, for example, and it goes something like this:

Welcome to our team! Here’s the onboarding README, which will tell you how to install all the dependencies for your local environment.

Then in the README, you spell out every step needed to set up the environment, with one additional, final step:

As the last step, edit this README to improve something for the next person who joins.