Correct software installation requires the presence of the installation file of the program, as well as knowledge of where and how to install the application. This presents considerable difficulties for novice users. Let's try to deal with everything in more detail.
However, we will not dramatize. With the installation of programs, problems do not arise so often, but with their removal ... In a word, you should start from the other end. With proper installation, the application creates its own keys in the registry and places all its working files in a specially designated (or assigned independently) directory. In addition, in most cases, file extensions that this program can work with are automatically attached.
So, dear "dummies": the correct installation of the software involves its correct removal. If you are used to going into the “Program Files” and “deleting” the program you do not need using the Delete button, then you can be called real vivisectors who do terrible things.
The fact is that with such a barbaric method of removal, the OS itself simply does not “know” that some program was deleted. There remain the associated associations of file extensions, tails in the registry and the “chunks” of an unlucky application scattered all over the hard drive. Of course, no one has canceled the fragmentation of the hard drive, which with this approach to administering your own computer is growing rapidly.
However, the setup of programs is equally important. If you suddenly need Photoshop, then think three times about whether you really need it? The fact is that with proper configuration, the same Paint Net perfectly satisfies the needs of 97% of home users. Putting a huge, broken one (and do you often install licensed programs for several thousand dollars?) And a complicated program for the sake of mastering a couple of functions in it is simply silly.
So what software installation can be considered correct? Well, that’s easy. Firstly, it is better to put all system utilities and programs in the system partition (yes, that same C drive). There are more restrictions on access to the folders of ordinary users, so the chance of “accidental" disappearance of program files will be less.
Favorite games for many people need to be put on a separate hard drive (drive D, for example). So they will not only not take up space on the system partition, but can easily be restored after reinstalling the system with all their saves.
Move on. As we have already mentioned, high-quality installation and configuration of software also require its high-quality removal. This means that the program should be destroyed only through the Uninstall shortcut, which can be found in the application folder. So it will be qualitatively and “culturally” deleted without leaving any kind of “garbage” on your computer.
In a word, installing software is a simple but quite a responsible matter, which all beginners must master.