Josef Albers was a German-born American artist and educator whose work, both in Europe and in the United States, formed the basis of some of the most influential and far-reaching art education programs of the 20th century.
And I started with this: I have not painted at all my childhood. In fact, I never painted. But I helped my father who was a house painter and decorative painter. He made stage sets, he made glass paintings, he made everything.
Apprentice is the beginner - the first years you work in a craft in the European sense you are an apprentice. That takes 3 or 4 years. Then you are a journeyman. You can go from one master to another and learn other tricks and other secrets.
As basic rules of a language must be practiced continually, and therefore are never fixed, so exercises toward distinct color effects never are done or over. New and different cases will be discovered time and again.