Download eReader from the App Store, or:
To get eReader onto your iPhone or iPod touch, go to the App Store on your device. Search for "eReader", then download the FREE eReader application and follow the easy installation instructions. eReader can also be found in the REFERENCE category of the App Store.
The App store is only available with the iPhone and iPod touch 2.0.x operating system. To get the 2.0.x operating system use iTunes 8 or later to upgrade your iPhone or iPod touch. Please note the 2.0.x iPod touch upgrade costs $9.95 from Apple while the upgrade is free for iPhone. The new iPhone 3G already comes with 2.0 installed. You can get the latest iTunes upgrade here: http://www.apple.com/itunes/download/