Read It in the Original
I certainly benefitted from reading the Heller decision. It is not that long, and Mr. Justice Scalia, with whom I disagree about practically everything else, did a truly admirable job of summing up a lot of historical knowledge and research going back to the Magna Carta. His opinion is a really good source of information for countering those who still hold to a collective right interpretation of the Second Amendment. You can find it here:
http://www.scotusblog.com/wp/wp-content/uploads/2008/06/07-290.pdf
One of the articles that anticipated and preceded Heller by a number of years was written by the liberal Constitutional scholar Sanford Levinson. In this article, "The Embarrassing Second Amendment," Levinson raised many of the arguments that Scalia subsequently raised in Heller:
The Embarrassing Second Amendment
This article, too, is a good source of ammunition when debating the meaning of the Second Amendment with people who maintain that there is no individual right involved.
Finally, I want to recommend the following:
http://www.yale.edu/lawweb/conlaw/materials/amarsecondthoughts1.pdf
This is from a syllabus for a course on Constitutional law at the Yale Law School, written by Levison and some of his liberal colleagues. It makes a great case for deepening the roots of the Second Amendment by re-establishing the kind of militia service that the Founder's had in mind in the context of today's modern world.
Funny, isn't it? When you drop the bogus "conservative/liberal" labels and see the struggle as between libertarians (small "L") and statists, we find that we have many friends on the other side of the aisle.
Bulleye