I know this is a non-answer, but if you have healthy financial habits, you won't need specific preparation for a recession.

I believe you can't time the market so 'preparing for a recession' is a moot point. Instead set financial goals that align with your risk tolerance and that make you comfortable.

That being said, the advice that I would give is just standard stuff. I think some sources do a much better job at explaining those so I'll let others answer. Big strokes is just the usual stuff: prepare a emergency fund, contribute up to your employer match (or more), set up a budget, etc.

One important point is, if you invest in the market, just keep investing, no matter what others do.