Originally Posted by moussamedjahed
hi I am a liter new if possible an advice... what is the best way to get practice in the real life with Unix and Linux like a book or tutorial?
You did not state what your goals are for using Linux or which distro you are considering.
If you just want basic advice for using Linux on a home computer system you can download the free Ubuntu manual from here: https://ubuntu-manual.org/
And here is a great site for getting started with Ubuntu: http://psychocats.net/ubuntu/
Here is a guide to using Linux Mint: http://community.linuxmint.com/tutorial/view/20
If you want to try Slackware, there is the Slack Book: http://slackbook.org/
The Slack Book is a great tutorial on basic Linux commands as well.
And here is a great source of Slackware documentation: http://docs.slackware.com/
The problem with physical (i.e., paper and ink) books is that they become out of date very quickly. The online documentation is your best source of up to date guides.
Write back if you need more specific help.
And welcome to the LQ forums!