Where are the manuals, ReadMe.txt, Copyright etc ?From auto-installers version 10 or + all documentations are located in My Documents folder or Documents based on your Windows version.
Follow this steps from auto-installer lower than version 10 :
This works on Windows Vista, 7, 8 and 10.
On the desktop, click on the « Start Menu », then on « All Programs » and go to the « Rikoooo Add-ons » folder. When you click on it, you’ll find the list of add-ons you’ve installed on your computer.
Ohter method, you'll find all included documentation in the root folder of your add-ons, exemple : C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\SimObjects\Airplanes\XXXX\