I have a book and need to create a PDF of it
What apps do I use to scan and create a PDF file.

[miss_p1nky]

Just good old scanner and a PC of course. Then you'll need to unbind the book (if you want a really good result) and scan it one by one.
You can also read tips here: http://www.insidescanlation.com/etc/The ... /main.html it's for scanning a manga but it's basically the same.