What "free" means with Open Source software
A lot of the times when discussing GNU/Linux and it being "free", many people think that this means it costs nothing. While it is true that GNU/Linux costs nothing, the word "free" mainly means that GNU/Linux is free as in your freedom to use it, study it, crack it open, change it for your needs, copy it, and you will not be controlled by a single entity on how you use the software.