You can transfer e-book buy using the Samsung wave device software – (Kies)
It is a PC Sync software.
If you have not yet installed the software on your computer, Please click on the below link to installthe software.
Once Kies is installed on the computer.
Connect the device to the computer.
On the screen of Kies – You will find MY Computer icon.
Click on it.
Go to the file.
Right click on it.
Select -> Transfer to device.