Since it's aimed at beginners, this probably needs a bit at the beginning of the "Simplified or Traditional" section that reads something like: "`Simplified` and `Traditional' do not refer to the spoken dialect at all, but rather the WRITTEN form of the language. As the name implies, the 'simplified' form makes roughly 1/5 of the most complicated characters in 'traditional' script visually less complex and easier to write. The remainder of the characters are identical between the two writing systems. Once you know one, learning the other is fairly easy, so most speakers can understand either." And maybe: "Although there are a very, very small number of dialect-specific constructs, all of the dialect of Chinese share the same written language (except for the minor Traditional/Simplified difference), although they will pronounce the words very, very differently."