@talentryto- I tried to install a motion detector security camera once, and I had get the help of a professional to finish the work. If you know about cameras, you may be able to install one by yourself. But if this type of equipment is not your specialty, chances are you will need some help.
Usually, the store where you purchase a motion detector security camera will have contracts with technicians that can do the installation for customers. You can often get a good deal on the installation, especially if you buy an expensive camera.
Keep in mind that not only do you have to set up the motion detector security camera and all of its settings, but you also have to install the hardware to place it on. This is why having an expert do the work is worth the extra cost.