Perfect, you don't need english, example your tutorial:
$ # install aircrack-ng
$ sudo apt-get install aircrack-ng
$ # superuser
$ sudo su
# # set interface to monitor mode
# airmon-ng start wlan0
# # continue with tutorial...
When your explaining terms... Just link to wiki, wikipedia has many languages. And when using terms, use english.. Like packet instead of paquete.
english is very minimal.. Then if you're not sure if they understood completely, post links with your sources.. In this case aircrack-ng.org.
Now your tutorial is multilingual, if someone had trouble with it.. Well they'll have to live without free wifi.