How to revise for British Empire "Depth" topics?

I'm also studying the British Empire, but we are doing different countries, either way, I revise by making summary sheets, so I do specific events and key dates and then break them down in subheadings. Then I do blurting, so I do the summary sheet on a Google doc and then put it away. Then I write down a new summary sheet but from memory on a piece of paper to see how much I remember, then look back at the summary sheet on the doc to mark it.

I have summary sheets for each event/Country and break down the events. I like doing it on a doc because it's easier to access rather than having loads of papers.

This is just how I do it but my friends like to make tables to cover different time periods or themes.