Thanks to all for answering to my post.
I don't run Mac OS 10.9 on my Mac presently, I have a less recent version. If I had it, it wouldn't be a problem for me, after all theses years...
I need a step by step guide so I can hand it to my students afterwards. Maverick's help do not work right now on our new iMac and the technician won't be able to fix that issue in the coming days: we start school next week... So a formal basic and step by step and user guide s would have been practicle for them. I know that there are many support file they can use directly on Apple Support Web pages but and all in one place document would have been better.
I guess I'll have to use other source including various Apple support Web pages.
Thank you for answering,