White balance

I have been looking through photography books to learn how to make my photos better when I stumbled on a page on white balance. Cool light is when it is cloudy, raining, or just plain foggy cool light has less exposure and is darker which is sometimes good but also you can't usually see the photo. Warm light is on sunny days, before your day begins, and before sunsets. With white balance you can trick light and tweak it to your liking. I read that in a particularly blue scene you can use tungsten setting and make the blues bluer. I have learned much from this.