In doing some research in the world of drawing fantasy art, I have built up several sites that have free lessons on how to draw fantasy art that I often visit from time to time, when the inspiration needs to be helped along it's way.
And these sites really are of use if you find yourself in a bind or have reached what is termed as artists block, the art resources that these sites present is very top notch stuff and it also inspired me to do some of my own drawing tutorials too.
The first one at the fantasy art school has some great resources on how to draw various fantasy art characters, creatures and the classic fantasy icons like dragons, goblins and unicorns.
About.com has a good section on drawing fantasy art and dragons from fairie art to dragon drawing, this site has lots of good quality free links and content resources on how to draw many aspects of fantasy art, so get learning the basics.
The Fantasy Art Resource Project at Elfwood is by far one of the best sites together with fan artists and volunteer artists who contribute to the sites resources, alot of topics in fantasy art are covered here at Elfwood including some useful digital art articles of note with photoshop.