"This is the majority of the bouldering in the Las Vegas area. It is located just outside of Red Rock National Park, so it's free! There is some rope climbing but its pretty much all bouldering and tons of it! Super convenient too and you can find shady and sunny spots at all times of the year"
Purchase the Southern Nevada Bouldering book. It came out in 2010 and is pretty up to date with everything in the area. There are also great photos, descriptions of the areas, history of the area, etc.