I am going to take a different view. I think we make a mistake telling beginners of all the things they shouldn't do.

I'd start with: get out on a trail and hike. Have fun and see how really wonderful that is. Imagine what it would be like to stay overnight.

Then practice in the backyard. You don't really need expensive equipment for an overnight---just something to keep you warm, and something to keep you dry. Food doesn't have to be cooked--just take sandwiches.

Once you have a few fun adventures like that, you can start thinking about longer trips, harder trips, and better and more expensive equipment.