2B No, your photos are not stored in Lightroom
4 Yes, you can move everything to a Mac
Thank you for the quick reply! One other question. Since the photos are not stored in lightroom, if I moved all of the photos from my pc onto an external hard drive (after importing them into lightroom from the pc), when I open lightroom will the photos originally on my pc still be in Lightroom? (Hope that makes sense) Thanks!
If you want to have the photos stored on an external HD, you probably should move them there in your operating system before you import into Lightroom.
But, if you don't yet own an external HD, you can import from the internal hard drive and later move the photos to wherever you want them to be, as long as you do it properly.
You should consolidate the photos to your external drive or to just a few parent folders either before you import them or at least before you move them to the Mac. That way you can do the Locate Missing Folder on just a few top-level folders and be done with telling LR where things have moved to.
Thank you! I appreciate you taking time to answer my questions.
One other question, if I purchase the disc instead of an online download, I would be purchasing Adobe Photoshop Lightroom 5. Am I able to get the update (5.6) online? Would this be free or would I have to pay for it?