there are several packages (distributions, distros) some specialized, other more general.
think of it like various brands of cola... you have coca-cola, pepsi cola, rc-cola and a dozen others
Now you get a bottle of cola (download a distro), open the bottle (install on pc) and enjoy (use)
but there's more... since linux is free some brands of cola come in bottles (binary distros), others come as DIY-packs with bottles, ingredients, etc (source distros). this means you have much more control of how the cola (programs) is made (compiled)
Now wasn't that easy to understand?
No, you don't have to thank me




