For Mac OS users, there is a system setting that may not allow you to tab onto several types of elements in a web page. To change this setting:
Accelerated Reader Bookfinder
http://www.arbookfind.com/
Goodreads (Book Reviews, Book Lists, Series Information)
https://www.goodreads.com/
Jackson Parish Library
https://www.jacksonparishlib.org/
State Library of Louisiana
https://www.state.lib.la.us/
American Library Association 2016 Best Fiction for Young Adults
http://www.ala.org/yalsa/2016-best-fiction-young-adults