Books and pdf on IPad don't appear in IBooks on MAC

Question

I've read through several solutions to this similar problem and none of the solutions work for me. I've uploaded several ebooks to my mac and they don't appear on the IPad. I've got content (PDF's) on my ipad that doesn't appear on my mac. For example, I've purchased 14 books that appear in the "cloud" and available for download on the Ipad but the purchases in Itunes show 2. I've updated my ipad, mac, ibook and itunes on both devices.
I've had my mac for 6 months and absolutely HATE it. I thought I'd be able to use it to work with files on the Ipad and that has yet to happen. I was hoping to have access to content across devices and that's not happening. At this point I'm feeling very disappointed in Apple products. I've even been to the Apple store and after 3 support people, they couldn't figure it out either.
I'm hoping someone here will know how to fix this.
thanks

Answer 1

What are the other solutions that you've tried ? As you don't say what you've tried I don't know whether you've done the following or not.
ebooks and/or PDFs that you've added to the iBooks app on your Mac will not show on your iPad unless you sync them to it, only ibooks bought from the iBookstore will potentially show in the cloud in the iBooks app on your iPad for redownloading on it. If not all of your ibook purchases are showing in your Mac's iTunes or iBooks apps (I'm assuming that you have Mavericks or Yosemite on your Mac) then try logging out and back into your account on it and see if they then show.
If you are using the 'sync collections' setting in Settings > iBooks on your iPad and in the iBooks app on your Mac then that does not copy books and/or PDFs between devices/computers, all it does is if you put a book/PDF into a collection on, say, your iPad, then if it is also in your Mac's iBooks app then it will be moved into the same collection on that - but if a book or PDF is not already on it then it won't copy it onto it.
If you want the PDFs (and/or epubs) that are in your iPad's iBooks app to also be on your Mac then you need to connect the iPad to your Mac's iTunes, do File > Devices > Transfer Purchases to copy them over to your Mac's iTunes, and then in the iBooks app on your Mac do File > Move Books From iTunes to move them into it.
Similarly to get PDFs and/or epubs from your Mac to your iPad, connect the iPad to your Mac, select it in your Mac's iTunes, and use its Books tab to select and sync the books/epubs that you want in its iBooks app.