Everyone here has given you wonderful answers.
It's funny, but we adults perceive 'learning' as our own adult pursuit, and not as the child sees it.
Let M. reassure you, your child IS learning. He is learning WHAT a book is. Much of this exploration is oral, as the tongue is still your son's most primary and accurate sensory organ. He is learning that books are not food, that they have parts that move in some ways. What you are seeing is common, and this is why board books/fabric books are wonderful at this age.
Keep on reading to him, as much as he'll enjoy, and sing a lot to him. Nursery rhymes, anything you enjoy singing; reading poetry. When my son was about a year old or so, and had trouble nodding off to sleep some nights, I'd just let him lay next to M. and I read him Stevenson's "Treasure Island". Reading classics teaches their 'ear' how language works; how sentences are composed verbally, and introduces the sounds of thousands of words to them.
By the way: choose books with very simple illustrations when you do choose books for your little guy. I'm amazed at how many books feature illustrations that are so "busy", the child has a hard time picking out the subject and action of the story. He'll likely have a little more time before he begins to scrutinize illustrations.
And don't forget, another fun thing to do with babies and toddlers is to give them 'tours' of their environment. Picking them up and carrying them around, telling the child about what you see. "Here is the refrigerator. Look, there's cold food inside"..."This is the window. Let's look outside. I see our tree. Do you see the black bird in the tree? It's a crow?" Narrating what's happening also gives the child language and context. "It's time to change your diaper, because it's wet. Let's lie down now. Time to take off the pants. Ooohhh! Here we go, right down over your legs. Now it's time to take off your diaper. Legs up, bottom up." Believe M., I KNOW this sounds moronic to some, but this is actually giving them a ton of applicable language that, with repetition, the child will retain and store away for use later. It also helps them to understand the sequence of transitions, and as they learn these words, it will help them better predict what's coming in.
And of course, modeling reading yourself, throughout life, helps to create readers. I know there's a lot of pressure on parents these days to 'smarten baby up" pretty early, but it's not based on any science and not in accord with the child's natural patterns of development. Just relax, there's going to be so little time before you hear "Mama! Read this!" and are presented with your kiddos favorite book for the 10th time that day!
H.