The phrase "easy reading" means a book or text that is simple to understand and read without much effort or difficulty.
Sentences with «easy reading»
It weighs just over seven ounces, which makes it easy to hold with one hand, and has four built - in LED lights to make for easy reading in dim settings. (lifewire.com)
The start was certainly not easy reading but it made you keep reading. (bookbrowse.com)