Each web browser and software program may save your books in different locations. For Windows computers, check your downloads folder or your documents folder first.
If you do not find the file there, you can also search your computer for the downloaded book. The filename will be the first few words of the title of the book with underscores replacing spaces.
You can search your computer by clicking the start button and selecting search on a Windows computer (or by pressing control and shift on a Mac). If you are still unable to locate the book, you are welcome to contact customer service or try downloading the book again.