Check out this riddle, I have for you.
Solve this mystery place, with this clue.
A seven letter word, is the first hint.
You gather data, that's found in print.
Inside this place, you can always find.
More words that you can fill your mind.
With plenty of books, for you to choose.
It's far more than you could ever use.
Your favorite authors are listed from A to Z.
You can check out these books for free.
Discover your genre, you love to read.
Use a Dewey system, when there is a need.
It sure comes in handy, when you know.
There is always a place that you can go.
It's a fascinating site, you got to admit.
The whole family can visit, so what is it?