David Busch's Nikon D90 Guide to Digital SLR Photography (David Busch's Digital Photography Guides): Busch, David D.: 8601406862036: Amazon.com: Books
Nikon D7500 User Manual: The Complete and Illustrated Guide for Beginners and Seniors to Master the D7500 - Kindle edition by Wilson, Hans. Arts & Photography Kindle eBooks @ Amazon.com.