About e-booksE-books are provided in protected PDF format (SPDF).
After payment, You will receive a file with the book, a link to the app for reading the book, and an activation key.
You need to download the app to read the book, install it on your computer, phone, tablet, and so on.
After installation, open the file and enter the activation key.
If you have any problems with activation, please contact us email@example.com