It's hard to answer the questions because much of the answer will depend on
your preferences. Some basics will help you decide, I think. Let me tackle
them in a 'logical' (at least for me) order.
Adobe Digital Editions is built to handle multiple computers and ereaders.
You can have up to six devices using the same copy of ADE. So, if you and
your wife want to use just one copy of ADE, you can link both of your
ereaders to it. Keep in mind that ADE can establish more than one
bookshelf, so each of you could have one for your own ebooks if you wanted
to keep them separate.
The way that ebooks work is both a productivity aid and a problem. The
publisher decides what digital rights to assign to an ebook. For instance,
(s)he may decide that you can copy the ebook to any device - or not, print
it - or not, and so on. ADE, and other electronic media software, must
comply. So, if the publisher says you can copy the material to any device,
you can share that material between yourselves once it's been downloaded
You have to have registered with Adobe in order to activate a copy of ADE on
your computer. It's tied to your Adobe user ID, but as I indicate above,
you don't have to have more than one Adobe user ID: both of you to use the
same copy IF YOU WANT TO. My wife likes to have her things separate, so
she's got her own copy of ADE on her computer (has something to do with
being afraid to use my computer). BUT, both of our ereaders are set up on
both of our computers, so we can access each other's libraries.
Each ereader also requires that you register with their respective sites.
When you do, your ereader will have its own user ID's, which ADE looks at
when it interfaces with them. When you get ready to interface them with
ADE, you start by getting your computer to assign them drive letters - just
like a thumb drive - and then bring up ADE. If all is well, ADE will
recognize the ereader automagically, and you're ready to proceed.
So far - so good. But there are decisions to make. Each ereader store will
interact with your ereader to allow you to buy and download ebooks and other
ematerials. You don't HAVE to download them from just one site, however.
Adobe has some ebooks, but so do SONY, Borders, and a host of other sites
like manybooks.com. ADE has the ability to interface with all of those
sites as well as public libraries and other sites that follow the DRM
protocols. So, it's versatile, but it does have some technical
The key to making this work is to set up ADE first, then set up the ereaders
separately. Most of the time, you won't have a problem interfacing them to
ADE. If you do, then it's back here to the Forum with specific technical
questions - and I'm sure you'll get good answers.
I hope this helps!