Watercolor Pro Edition is a solid effect bundle designed for illustrator CS5 and up. Made from high resolutions scans of real watercolor, the effect is super realistic and very easy to use. The bundle comes with 49 watercolor background tiles, a set of 12 watercolor AI brushes, over 50 realistic paint splats, and 42 instant watercolor effect graphic styles. These work great on the included watercolor paper graphic styles.
You can watch a HD demonstration of this product, here: (https://www.youtube.com/watch?v=tYQHLldJ3j4)
I've created a fully narated tutorial on how you can use this bundle, here (https://www.youtube.com/watch?v=oXSa7A3bqEY)
A readme is included with contact info, but the actual instructions are explained in the video. If you can't view youtube videos, you wont be able to watch the instructions.