OK, so let's assume you've just purchased your first ebook for the EBW1150 from
say www.fictionwise.com or
www.ebookwise.com and don't know yet how to use it. (
and you will learn fast, just start with a crawl and then ... 
)
The way the .imp ebook gets "onto" your EBW1150 is by transferring it via the usb cable that connects it to the computer BY USING THE EBW1150 reader itself to do this. Once purchased, the ebook is then made available on your
Online Bookshelf stored by fictionwise's host company (the manufacurer of the EBW1150, eBook Technologies, Inc.
aka ETI) on the ETI servers. All you have to do is connect via the USB cable to your Online Bookshelf by tapping the Online Bookshelf tab on the EBW1150's Bookshelf screen. This "downloads" it again but this time via the internet directly (or at worst via the telephone line
) onto your EBW1150.
Just so you know,
www.ebookwise.com purchases are easier as they always are immediately available in your Online Bookshelf. However, when using
www.fictionwise.com, you can also download the Multiformat ebook you purchased for "safe keeping", but make sure you download the OEBFF Half VGA .imp format which is the only one the EBW1150 can read natively.
(Note: If DRM is used, then the OEBFF Secure Half VGA .imp format will be restricted to only your EBW1150 device and cannot be transferred.) The other formats would need to be converted first to .imp to use, and that's more of a hassle. However, you still may want it in .prc or ereader .pdb if you have OTHER devices that read those formats. It's really up to your own preferences which ones you download.
The .imp ebook is always made available on the ETI servers for you to download (again and again) via the usb cable using the EBW1150 itself.
You can also transfer the .imp ebook you downloaded to your desktop (i.e. hard drive) using the eBookwise Librarian (purchased at
www.ebookwise.com) or our own free impserve program available in the Mobileread.com Fictionwise/ebookwise Forum. This is also how you would download ebooks from our E-Books Uploads .IMP Books library forum into your EBW1150.
If this still doesn't make sense, just re-read this
post about using the eBookwise Librarian program or this
post about using the ETI servers.
Happy reading!