Not too shure about an OS tutorial, especially on Linux.
With the different types of distros out there, ya will find a tutorial concentrating on one distribution. As such its installation procedures.
And Believe me some installations of Linux itself can painful. (Not to mention if the network connectivity isnt set up, how to get help).
ya may consider using a small linux distro (DSL) or a virtual PC (VirtualBox) to get ya started in linux, cuz a simple setup and accessibility to help is no doubt a requirement for new users.