I have a MacBook Pro with most of my photos. I recently bought a iMac to store stuff on. How do I use iPhoto Library Manager to transfer the photos from MacBook to iMac?
Why use Library Manager?
If there is no library on the iMac, just copy the old library over.
I already have some photos on my iMac.
If it is only a few, you can export them as originals, copy the library over, let iPhoto convert it (if necessary) when first opened and re-import the images originally on the iMac.
Its like 90GB. Any ideas?
Read the Help on Library Manager.
See the link above? There's an entire section of moving material between Libraries.
Retrieving data ...