ArtAcademy has a free monthly lesson on painting and drawing, you only have to subscribe to receive the alerts when a new lesson is available.

I collected some lessons:

File name | size in bytes
Colville_January_2006.pdf | 2.974.875
Drawing Expressive Eyes F2004 Newsletter.pdf | 1.519.687
Drawing the Skull Part 1 February 2005.PDF | 3.035.127
Drawing the Skull Part 2 March 2005.PDF | 3.788.209
Drawing the Skull Part 3 April 2005.PDF | 1.865.256
February 2006 Child Play.pdf | 3.144.494
Franz Hals October 2005.pdf | 4.049.295
Frederick Varley - June 2005.PDF | 3.943.715
January 2006 Newsletter - Specs.pdf | 4.662.948
July 2005 Anatomy of a Smile.PDF | 7.725.762
July 2005 Degas.pdf | 14.587.564
Plasticity Tone Value November 2005.pdf | 2.689.982
Raphael.pdf | 10.097.111
Rendering Hair 1.pdf | 4.084.684
Sargent Nov 05 Meet the Masters.PDF | 4.435.845
September 2005 Inspirations1.pdf | 414.767
Setting the Eyes September 2005.PDF | 3.608.124
The Arabesque - A Dynamic Correspondence December 2005.PDF | 3.176.463
The Ear - Five Easy Pieces June 2005.PDF | 3.581.521
The Neck Form Structure October 2005.PDF | 1.248.829
Thomas Eakins April 2005.pdf | 3.227.002

Curso Completo de Caligrafia do Amadeu Sperandio. Brazilian calligraphy course, by Amadeu Sperandio, a classical in Brazil.