You can see where you are "in line" for a book by looking at your Position: on the entry on your Wish List.   

• The system will also try to estimate when you might get the book, if it can
• This estimate is based on the recent frequency of the book being Posted into the system
• If not enough data is available, no estimate will be given
  • In this situation, if the book has ever been posted before, the "last posted on" date will show on the listing.
  • If no estimate and no "last posted on" date is showing, this means the book has never been posted into the system before.

Related Links:

What is the Wish List?
How the Wish List Works
Why did I move *backward* in the Wish List queue?