"There is, however, a key difference that it appears
many Windows users don't get. In Windows, every program has its own
installation routine. Usually, but not always, it requires you to
click on some variety or the other of individualized setup program.
In mainstream Linux distributions you use one program, often called
a package manager, to install all your programs.
"Personally, I find the Linux method easier because not only do
package managers install the programs, they also enable you to
search for a program. Say you want a program to display Adobe PDF
(Portable Document Format) files. In Windows, you need to find out
what program you'll need-Adobe Acrobat Reader, then download it,
and then install it. Easy enough, but it could be easier."