[ohthehugemanate]

There's no "learn how to use," just enable it on your existing devices. Settings > Accessibility on android, at least.

Consider making a habit of using it when you are circumstantially visually disabled: in bright sunlight, while you can't be physically present at the phone (eg while doing dishes or folding laundry), etc.

[Vinnl]

I think it's good to learn the different ways people can use it too though, e.g. learn about landmark navigation, or skipping to headlines, or how people navigate a table, etc.