You could send me, et voilà, Stief, ultracross a PM & we'd be happy to help if we know. lol
There's mac osx files you can downld & they're not copyright. At least the 1st isn't: 1. macos tips and tricks; 2. OS X Bible.pdf; 3. Inside_Mac_OS_X.pdf
This will give you a start. I came from OS 7-9 & was was rather daunted by the idea of OSX which seemed so different. (I ignore my earlier times on c/ps, DOS & so forth. lol
Even Unix/Xenix, etc.)