For me, learning poker is about having a concept finally click into place. You might have heard something here, something there, but one article/forum post/video/tutor finally puts it in the right way and it clicks. If you find you get that from books, then re-reading could certainly give you the idea that might make your game a lot stronger.

Wota would suggest forum posts and videos are more useful, it would be interesting to see if others agreed.