Not a stupid question. I have taken care that each of our children learned how to do that at very young ages - it's miserable to need to do that and not know how. Never to late to learn. (You know the joke about the meanest animal in the world? The croc-a-gator? The one with two heads and no...)

Here are some tips:

If at all possible, carry a small garden trowel with you - the little one handed jobs. You use it for many tasks, ONE of which is digging a small shallow hole (and moving errant feces into the hole and reburying it). A fancy steel trowel like a "U dig it" is handy, but a simple $1.00 plastic one will handle every task except moving hot coals in a fire (one of those "other uses")

If you are wearing suspenders, manage them carefully - pull them forward and keep track of them.

If you have things on your belt, take care they do not slip off the belt and likewise mind your pocket contents (it's not a big deal; just something to keep in mind).

Trousers etc to your ankles and squat down all the way - on your heels if you are limber enough. If you are not quite that limber you may want to lean back a little bit using a tree, rock, or walking staff to steady yourself until you "get the hang of it".

You are more likely to urinate on your pants in that position than get feces on them - pay attention to that detail (either urinate first or keep the monster aimed in a safe direction while squatting).

Do your paperwork while in that position - it probably will take less paper than you are accustomed to (it is a more anatomically correct position for elimination than the water closet).

If you're not clear on any of this, perhaps you should do a "trial run" (without the elimination) in front of a mirror at home - sideways to the mirror so you can see where things are in relation to each other.

This is not a big deal - MOST of the world does it that way. You can manage, I'm sure.

Don't do this within 50 meters (more is better) of a body of water. Bury your waste SHALLOW not deep. Shallow waste is in the active layer of the soil and will biodegrade very quickly in all but polar regions (some alpine locations are in this category as well - generally anything above 4,000 meters). If you bury it deep it takes a very long time to biodegrade. If you are in polar or alpine regions it will not biodegrade significantly in your lifetime, so do it in a bag and pack it out if you can.

Deep latrines are for encampments of many people for many days. That is a whole 'nother topic. One person on the move should use one shallow hole per elimination (new hole each time). Think of a cat. Make a "cathole", use it, and re-cover the hole.

On paper: It depends. At least do not leave it above ground. Sometimes I burn it before I bury things and sometimes the conditions make it unsafe to burn the paper. Just don't leave it laying around.

Hope these tips help.

Tom