Choose books that will be relatively easy for your child to read, in other words, those that are slightly below his level of reading ability. Pick a mystery, a joke book, books about current movie stars or athletes, even comic books. To become a great reader, a child needs lots of practice. If you can find the types of books your child will be interested in reading, he'll get the pure practice he needs to make other, more complex, reading easier. Take him to the library and teach him how to use the computers and the wide variety of resources available.
Many libraries offer classes to teach kids how to use the resources.
Make a routine visit to the library, and make sure you go when you're not rushed, so he can take time to explore. Buy your child a bedside reading lamp, or a tiny book light. Most kids will do anything rather than go to sleep, so there's a chance you'll create a new bedtime reading habit. This change of routine causes great sadness to a child who has come to love falling asleep as you read. Even a teenager will enjoy being read to if you pick books that pique his interest.