The phrase "one's reading material" refers to the books, magazines or other written materials that a person is currently reading or interested in. Full definition
So you get a variety of reading material for whatever you choose to pay for it. (fangirlconfessions.com)
Fortunately, there is plenty of reading material for those looking to read the most progressive and insightful business books, and get ahead, in the next several months. (voiceofreasonconsulting.com)
By giving their students a choice of reading materials in the early grades, elementary teachers increase academic independence and motivation. (thoughtco.com)