Exactly what are you trying to learn about linux?
Linux is a Kernel, so I am guessing you want to learn about a linux distribution.
Are you wanting to learn a GUI Interface such as KDE or GNOME, or Command Line?
Do you just want to know 'How to get around'? or do you want to learn how to manage a server, and if it is a server what kind?
What flavor of linux do you want to learn? (They are all slightly different)
Bottom line is if you want something more than a guided tour of a desktop you are probably going to have to get your glasses out and read. Or you could try the time tested hands on approach coupled with asking questions and reading when you get stuck.
There are a ton of good resources, but they are always geared toward a flavor of linux like OpenSuse, CentOS, Ubuntu, etc.