In August 2010 I published the first two posts specifically about brushes. (I've discussed brushes in other posts but not as the main topic.) I thought it would be easier, as time passes, for people to locate these posts if I created a page which listed the links, providing another way besides the search engine, to locate this information.
Hope this helps. I'll try to remember to update it with any "brushes as the main topic" posts I do in the future.
About Brushes: Part I—General Thoughts on Selection and Care
August 16, 2010. How I take care of and store my brushes.
About Brushes: Part II—Current Workhorse Brushes
August 17, 2010. Includes a photograph and manufacturer's information to help you locate and identify brushes of possible interest to you. I explain what I use the various brushes for in my own work.
The Pentel Pocket Brush Pen and the Pentel Color Brush
January 15, 2009. I use these two brush pens probably daily. You can read my review of their strengths, weaknesses, and differences, as well as see a photo of them both, at this link.