PDF import is not available in iBooks Author. So you can not do as you ask at this time.
Give Apple feedback on this at: http://www.apple.com/feedback/ibooks-author.html
Also, see this thread: https://discussions.apple.com/thread/3682845?tstart=0
Try this instead...
• Open your PDF in Preview (the application) - select all and copy to the clipboard.
• Create a new document in Pages...paste and verify. Save that document.
• Create a new book in iBA (template choice is yours) - use the menu to 'Insert Chapter From Pages or WORD document'. ...locate the Pages file you just saved and go.
I've used this with very little issue, so I know it works...images and all. I'd be interested in how it turns out for your use, tho, thanks and good luck.
Do you want to convert the PDF to a entire 200 page ibook or have the PDF as a widget inside a ibook on a single page and be able to page through that pdf/widget like the gallery widget?
I may have misunderstood you, I thought the later.
to convert to a entire book, KT's method would be the way to go,
I could not get it to work, (lost the graphics, and strange formattting) but I may have been doing something wrong. tried it a few times with different multi page PDFs.
another issue is the change in format if the original PDF is 8.5 x 11 (portrait) and IBA being landscape etc.
Here is a free ebook conversion tool for you.
You can easily convert your ebook from pdf to epub.
Free Online Ebook Converter
It provides you with the best PDF to epub converting experience.
I'm just creating a sort of comic book from a load of PDF pages from the paper publisher.
I trimmed to as near iPad format as possible and have loaded them up a page at a time - 48 pages.
Its all working fine albeit each page takes 2 seconds or so to load. Each page is around 2Mb and I need high resolution for enlarging and possibly projecting.
The author is fine with the work but I'm not happy with the TOC as its difficult to link the contents to the TOC as there are no proper "Chapters" AND NO TEXT!
The PDFs loaded into iBA fine!
I found what I think is an easy way to put PDFs into your iBook...
1. Open the PDF in Adobe Acrobat
2. Save the PDF as a JPG (or other photo format), using the same name. Acrobat will save a series of individual JPG files, one for each page of the PDF, as an image.
3. Create a Gallery widget on the page in iBooks Author where you want to put the PDF.
4. Drag the image files onto the Gallery widget.