My DS is 2 and won't sit still for me to read him even a 5 page baby book. He just looks at one page for a second and then he's off. We have loads of different types of books from brightly coloured 'baby' books to rhyming stories and classics like the Gruffalo. Even touch and feel books and ones with sounds. He lots of has accessible books in his bedroom and the lounge. Some board books, mini books and some paperbacks.
He had a very short lived interest in a couple of peppa pig books. And a noisy train book, but he's just not interested now. He won't lie or sit down for a story at bedtime either. If I try to cuddle him or sit him on my lap to read he just escapes instantly. It's been like this for a year, basically since walking.
Everyone tells me reading is so important. Plus he is slow on his speaking so I feel I should be doing more 
Any advice ?