Absolutely. I will caution you that the first two can be a bit of a slog, especially the early parts of the first book where you don't know who any of the people are. Might actually help if you watch the show, to be honest, since you'll already be familiar with most of them right from the get-go. I read the first few books as they came out, so the show wasn't around yet.
The books are great, though, and they're different enough from the show to set them apart. Each book has a couple to a handful of viewpoint characters, and each chapter is from the perspective of a single character, so you get a lot of extra info the show just can't provide. I'd also imagine that reading the books will give you a greater understanding of the world and the politics than the show can provide, kind of like how reading the Game of Thrones books makes the show a hell of a lot easier to follow since you already know all the character names that get tossed around.
Plus, you won't have to wait to know what happens next, at least to a certain extent. There are already six or seven books out, with another coming out in December. They've been dropping at a yearly rate and I don't expect that to change. I think there are either two or three still coming (I wanna say nine total, but would need to look it up to know for sure).
