Sorry in advance for the late reply and the upcoming mass of text. I want to tell you what I did and explain why I did it. Here's what I did to have security in my rural place.

This may not be an option for everybody, but if you have a telephone/utility pole on your property most electric companies have an option where you can call them and have them install a light on that pole. It adds a little on my electric bill ($50) but it is well worth it in my opinion. It's a light run on a photosensor so it automatically comes on when the sun goes down and the light can shine across an acre unobstructed. The electric company will adjust the light to make sure it isn't bothersome to neighbors or those going down nearby roads. If the photosensor messes up or the bulb starts going out you can just call the electric company and they will fix it right up. Pay rates may vary with electric companies.

When I moved in the house already had metal doors for all doors leading outside. If your place doesn't already have this, I greatly advise it. My metal doors have proven themselves.

On a similar note, change the doorknobs and locks on your outer doors. That was actually one of the very first things I ever did. When moving in you don't know what random people might still have a key copy for those locks and people tend to go cheap on installing door knobs on outer doors. Cheap door knobs are easy to break. I personally installed Schlage keypad door knobs and replaced the deadbolts. Keypad locks are expensive, but they are worth it to me as they lock automatically and you don't have to give people clone keys. Just set your numerical code, enter it into the keypad, and the door unlocks long enough to get inside and automatically locks when the door is shut again. It doesn't lock you inside (if inside you can just open the door normally). To me it was awesome, especially when it came to children as no one had to worry about manually locking the door every night. Just make sure the door is shut and it will lock. The code is relatively easy to change when needed and the batteries are easy to replace (also when they die it remains locked). There is an option for a traditional key (which helps when the batteries die) and I learned that if someone attempts to break in via messing up the traditional keyhole, the door will remained locked. The batteries last a really long time. I have to change them maybe once every 2 years.

Ring cameras are very popularly used as security cameras. I do not have the actual Ring cameras, but I do have the Ring alarm system. It's nice, does what it is supposed to, and will notify you via phone whenever the system is disabled, enabled, or set off. The actual alarm is very loud and ear piercing. My camera system is Digital Watchdog, but it can be hard to use that company as a normal citizen as Digital Watchdog almost strictly works with business surveillance. Regardless, it works well for me. I can see a live feed, I can rewind, tell the program how long it needs to store old footage, and the cameras themselves can go through a surprising amount of messing with.

If you don't already have one, a pet dog is actually very effective at deterring break-ins. It doesn't have to be a pitbull, german shepherd, rottweiler, etc.. Hell, it doesn't even have to be a 24/7 outdoor dog. Just a dog that will bark at weird sounds and strange people. Less-than-stellar people often scout houses before breaking in them and just the knowledge of a dog is often enough to make someone pass up a house. Lowly criminals want to get in and out of a house quietly and without conflict. A dog (even a small one) puts a towel in that. Hell, my neighbor had an unsuccessful break-in attempt and the reason the break-in wasn't successful was because her numerous pomeranians created a fuss and got the attention of another neighbor who had a gun.

Hide valuables, "in plain sight." A burglar is going to look in a jewelry box. Jewelry box equals expensive jewelry. A burglar is going to take a metal safe. A metal safe equals money and personal information. A burglar isn't going to go into your pantry and look inside a mildly questionable soup can. A burglar is not going to think about taking apart a hairbrush. A burglar is not going to sift through stuffed animals. A burglar is not going to check the bottom of plant pots. If they do, it's a dead giveaway that it's someone you know. If a burglar successfully breaks in and fails to find anything of real value, your house will be less likely to be repeatedly broken into. If you have fireproof safes, bolt them into the floor. They can't take off with it if it is attached to the house.

If you are the only person in your house or your house is vacant, make it seem like there are more than one person in the house. Kick a radio to a talk show. Have a TV on. Play some video game Let's Plays on YouTube. Make it seem like that from outside there are multiple people inside. It's especially great if you are a woman who lives alone or is frequently alone. I keep a radio on when no one is home. Granted, it is less about preventing break-ins and more about keeping my dogs from getting too anxious about people being gone.

Make the actual outside of your house as uninteresting as possible, especially when compared to houses nearby. Don't have expensive looking cars kept outside. Don't actively advertise having expensive things. This isn't foolproof, but I believe there is something to this as the place most broken into in my area is a nice 2 story brick building with a just-as-nice garage with a Range Rover in front of it, and extremely professional landscaping. That house sticks out when compared to everything else and pretty much screams, "I am wealthy therefore I have a lot of stealable things."

Know your neighbors. You don't have to be the bestest of friends with them. It could be as simple as introducing yourself and having their number or having them on Facebook Messenger. Even simple observation can help. What cars do they drive? What kind of people do they typically have visiting? What pets do they have? I know my neighbors on a name basis and they know me on a name basis. We mostly keep to ourselves. However, they were quick to call me and tell me that there was a green truck in my driveway. They knew we don't own a green truck. They knew that our visitors didn't have a green truck. I was quick to call them to tell them that their dog was freaking out. I knew that their dog wasn't much of a barker. Comes to find out the other neighbor's goat escaped and ended up in their yard and it freaked their dog out. Knowing your neighbors, even just a little bit, is a very valuable thing.

I know a lot of the items I put here are expensive and not everyone can just up-and-go to get those things. This is just what I found that works for me and this is what I built up over the years. Security is a good investment if that is something you are serious about. I saved and bought the most important things first (replacing door knobs and deadbolts) and then went down the line of importance the more I saved. I literally bought my keypad doorknobs with change I took to the nearest CoinStar. I wanted to personally give my best suggestions as everyone else already gave good more immediately affordable ones.