With the assistance of Rick Anderson, I have posted his article on Copyright and Open Access which originally appeared in the American Historical Association's Perspectives.
You can find this article and a few others that have lasting value in the "Resources" tab at the top of the H-Scholar homepage.
You can also retrieve other useful articles by entering the search term "How-to" in the seach box on the H-Scholar homepage. This will also retrieve some discussions posted to the list about how to particpate in H-Scholar and H-Net.
Remember that you can also find a lot of useful information through the "help" button at the top of the H-Net homepage. The H-Net staff has recently added some video tutorials on various H-Net activities such as submitting a post.