Wasn't that bad. I liked the single action.
There you go. The experts will tell you everything, but it all boils down to what you feel, and what you like, and dislike about it.
Get that Nagant, and some ammo, play with it a little, see what it is, and is not, and what you can do with it, and what you can't. Admittedly, you are a novice, but it will give you a baseline of your own ability, with that gun. And then put it away in your collection, so it stays in good shape, a unique milsurp handgun.
Just don't stop there. When you can, get a modern revolver. In a common caliber. I used to always say "get a .22" to learn with, but ammo shortages still plague some areas, so get something you can get ammo for. .38 Special would be a good choice. A .357 Magnum gives you more options.
Get a S&W, or a Ruger, or a Colt ($), something made for the civilian market, and check the trigger on those. You might find something ...different from the Nagant. Something that, once you get used to it will let you shoot even better.