In need of a good e-book?

In our high-tech society, it's so convenient to have everything at the touch of a keypad or mouse click. E-mail, text messages, Facebook, Gmail chat, online shopping, online ordering and online reading.
Thankfully, many traditional institutions such as the library are keeping pace with trends and are catering to those who are attached at the hip to their computer or wireless devices.
Not only can you search online for books to check out from one of the Katy-area Harris County libraries, but you can also read several books, for free, from the comfort of your home.
If you haven't checked out (no pun intended) Harris County Public Library's eBranch, you need to. I stumbled upon this gold mine and was quite thrilled to find it.
As I was searching the library's online catalog for a book that many reviewers say has helped their babies sleep well, I discovered all copies were checked out from the Katy-area libraries - Maud Marks, Katherine Tyra and the Katy Branch.
I was given the option to view the e-book, or electronic book, and wondered what it meant so I clicked on the link. To my surprise, I was led to a site that allowed me to input my library card number and view the book I was looking for - online and for free! The book was quickly downloaded through Adobe Reader and I began reading for proven ways to get my baby to fall asleep on her own (yes, I know, it seems impossible!)
According to the library's site, you can download e-books, audio books, videos and music. All you need is a library card that will include your library number. This link provides an overview on how you can get started downloading digital media for your computer as well as MP3 players.
One note on e-books - there is a timed session for reading them. If there is inactivity for a certain period of time, the e-book "logs off" and then you need to go back to the search page to click on your book's link. It will bring you back to where you left off.
If you frequent the Cinco Ranch library, a branch of the Fort Bend County Library system, you also have the option of using your library card to download audio books through the digital library. The system is pretty similar to the Harris County online option.
Of course, reading e-books is not for everyone and the libraries can transfer hard copies for you if you're looking for a book located at another branch. But the digital library option is definitely a good way to "test drive" a book to see if you want to purchase it or make a trip to a Katy library to check it out.
Have you had good experiences with the Katy-area libraries? What do you think about the digital library, or do you miss the Dewey Decimal system?