Art painting classes are not the same at every school that you go to. Some of the art painting classes will be designed to help the very beginning artist to create their work, and some of the art painting classes will be designed to help the skilled artist improve on their style. When you look into enrolling in an institute of art painting class make certain that the style of work, and the skill level required are suitable to your talents.
You can enroll in classes that concentrate on drawing all of the pictures in charcoal. The instructor will help the student learn to use charcoal to add shading and depth to the pictures they sketch. They will teach their students how to blend the charcoal and create different effects. Most of the time this work is done on paper instead of canvas, but there are instances where students will be taught to perform on canvas using charcoal.
Watercolors are a common painting style that is taught in the majority of institutes. If you have an interest in learning to create beautiful water color pictures on canvas then look for a class at the institute that deals primarily with the use of this type of paint. There is a big difference between oil paints and water colors so do not get the two classes confused.