The whole number/letter system is pretty hard). =) I think we all have our fair share of o_O-ing when first learning D'ni. There's a really great D'ni dictionary I found if you are looking for words: http://myst5.com/dnidictionary.html

And if you're looking for some phrases: http://www.eldalamberon.com/dni_dict.htm

I hope they are able to help. ^_^