I have to share the latest blog I have discovered and just give it some serious due credit. It by an Artist for artists.
Not only is it what I would definitely call an "Authority Blog"-(my opinion is biased of course-because I am now a regular reader of this site).
That said, it is full of art related subjects-from her own art posts, to Internet marketing, as well as links to many resourceful sites (some even to her own groups) as well as to topics on sketching...and much more. Check it out.
The link is: