Hi
Stuart - welcome to the forum!
Tim has already provided two great links that compare a number of office apps - for myself, I'm using Apple's
Pages, which is part of their
iWorks suite.
Now concerning getting a page or pages from a book onto your iPad, you might want to provide some clarification, i.e. do you just want to read these page(s), integrate them into a document, perform some word processing, or other?
If just for reading purposes, the page(s) can be scanned and then transferred to your iPad by various means (e.g. email, Dropbox, etc.) - of course, plain scanning will produce an image which cannot be edited. If you need to 'edit' the material, then scanning using OCR (optical character recognition) is needed - let us know your needs & good luck!