I found an interesting website today called Tailingua, which provides a good, clear introduction to the Taiwanese language (Tâi-ôan-ōe). It includes information about the language, the numerous methods used to write it, and explains how to set up your computer to write Taiwanese using Peh8-oe7-ji7 (POJ), the most popular system for writing Taiwanese with the Latin alphabet. There is also a list of books for learning Taiwanese, links, and a blog.

Other sites with information (in English) about Taiwanese include Talking Taiwanese, Intermediate Taiwanese Grammar, and Glossika.