There appear to be no books re the 30th.

There is however a listing, "Things Grew Beautifully Worse: The Wartime Experiences of Captain John O’Brien, 30th Arkansas Infantry, C.S.A.," his regiment however became the 25th Arkansas and is not what you want.

I suggest you go to the Goggle search hit for available information, see:

http://www.google.com/search?client=safari&rls=en&q=30th+arkansas+infantry+civil+war&ie=UTF-8&oe=UTF-8

Information on Camp Hope is found here:

http://www.google.com/search?client=safari&rls=en&q=Confederate+camp+hope+arkansas&ie=UTF-8&oe=UTF-8

I have been unable to find their location in August, 1862. I suspect they were still in camp near Little Rock.