I came across this interesting website named Draw Paint Academy, run by Dan Scott, which provides many free tutorials on drawing and painting. There is a focus on traditional art methods, guided by practices of the old masters of history.

Some of the top posts are:

A Comprehensive Guide To Color Theory For Artists
10 Landscape Painting Tips Perfect For Beginners
7 Tips For The Self Taught Artist
How Claude Monet Used Haystacks To Demonstrate Light and Color