See the pic for more details.
While they're written by mostly the same writers as the VNAs and EDAs, they come with the additional challenge of being written for children. So no multi-book-spanning arcs, or weird exposition about this one character's sex life. Definitely don't expect a mold-breaking book that irreparably changes the franchise either. But they aren't as bad as you might think. Some of them are actually good books. Touched by an Angel handles Weeping Angels better than Moffat has in years.