Can you please provide more guidance on e-book readers? We want to be able to check items out from the library and also prefer a large screen
Unfortunately, I have not used an e-reader, so I cannot provide any personal insight. However, having done a bit of research, I found a few resources that may help answer your questions. I will post the links below so you can read reviews and comparisons from some reputable sources.
From my research, it looks like Kindle is the major e-book reader that does not allow you to download from libraries, because it does not support EPUB, the necessary software that provides access to libraries. Be warned that most of the e-books only allow you to purchase from their own stores, i.e. Barnes & Nobles Nook only allows you to buy content from Barnes & Nobles. It looks like you can check out books with it, though.
I can’t give you a personal review of screens, but it looks like the prevalent type of screen is e-ink, which looks most like a printed page and is not back-lit, which some users say prevents eye strain. It cannot be seen in the dark. The other type of screen is a traditional LCD, which is back-lit, so can be read in the dark. Many of the readers offer multiple sizes, so you have your choice. The CNet review linked below guides you through many of the features.
Since you mentioned you have Macs, also take note when you are looking through the guides that not all devices allow you to share content with multiple pieces of equipment, which may or may not matter to you.
You can definitely master this! Looking through the available information, it just seems there are many, many options which means there is a great deal to learn about. I hope this answer helped. Let me know if we can do anything else.
The first link takes you to a program that some local libraries participate in to provide patrons electronic content including e-books. There is a link on the left which takes you to compatible devices (be sure to select e-book) and there is also a link which displays participating libraries. If your library isn’t there, I would contact them or go to their webpage for more information.