In this portrait painting tutorial, Alex Tzavaras talks about the most important thing you need to know about Art materials. Which is, that no amount of expensive art supplies will make you into a good painter.
To prove this hypothesis, Alex then paints a portrait painting in oil using the cheapest art materials he can find. In order to see how much of a difference they make to the standard of his work. He discusses which cheap art supplies, brushes, canvas, paint he found most difficult to use and which kind of better quality materials you should invest in first.