Try Robert Graves' "The White Goddess" . Most books on Celtic Paganism
include at least one chapter on Ogham. An alternative route, but a good one
to get a feel for the representations of te trees themselves, is "The Celtic
Tree Oracle: A System of Divination" which is actually a tarot-like set of
cards based on the Ogham, by Liz and Colin Murray (and beautifully
illustrated cards by Vanessa Card -ironically).
Have fun, it's a very interesting system.
> Anyway, let me get to the real reason I am posting the group for the
> first time (Hi!). I am tremendously interested in the Ogham (tree)
> language, but I can't seem to find much about it. Any assistance would
> be greatly appreciated.