I ditto the suggestions about graphic novels and comics; my dd3 is really into "monster" books right now (Loch Ness, terror bird, etc.) -- they tend to have big words, but you can find ones on the short-side. Another thing that is working with us is Hi-Lo books (high interest, low reading level; they're made for older kids who are struggling with reading, but the point is, they're not too long and the material will seem interesting to your ds even though the reading is easy, and it will introduce him to new ways of expressing himself because it can contain a lot of idioms, etc.) The one thing with Hi-Lo books is to make sure the topic is appropriate for whatever his mental development level is. My dd's obsession of the week is a Hi-Lo graphic novel called Tiger Moth: Insect Ninja. I also ditto the suggestion about not having to read the whole book in one sitting, and the one about getting magazines (National Geographic maybe, but there are plenty of others, too.) Then your ds can read as many bite size morsels as he wants. HTH.
