I came across a site by Marina Fridman is a Canadian multi-media artist and drawing teacher. She has dedicated this website to help people to learn how to draw. Her step by step approach is elegant and simply put together.
She touches everything that I have been showing others over the last 30 yrs. I highly recommend checking out her website. It would take me years to compose these type of lessons. You will not regret it
http://www.thedrawingsource.com/
jacqueline price 