If you enjoy watercolor painting, you have to check out this website. The main page claims " the world's finest guide to watercolor painting", and I cannot disagree. This site is created by Bruce MacEvoy. You can learn more about him by clicking on "FAQ" from the main page, and see his artwork by clicking "recent works" from the main page.
If you are new to the site, I suggest you hop on over there, (after you finish here, of course) and click on "intro" at the top of the list of links on the left side of the page. From there you can read a info about the site, and explore the site map.
The site map on this site is an extremely long list of all of the content within the site. You can click on anything on the list to see the page containing the information which interests you. This fabulously detailed list begins with links to a wealth of information about the tools and materials for watercolors. Paints, brushes, paper, pallattes- even including things like explanations of how the paints are made and guides to the many choices and brands available. There's also tons of instructional info like color theory and mixing, composition and design, drawing and watercolor technique, and lots more "how-to"s. Unbelieveably, that's just half of the list! They also offer an extensive directory of instructional books available, complete with full reviews, a directory of retailers for the watercolor artist, and one more incredible thing: a large online watercolor painting exhibit. Artists are chosen from the 18th century to today, and works and stories of their lives are there, on this amazing website, for you to study and enjoy.