I am studying mandarin and pinyin is very helpful for me to relate what I am learning in Mandarin to what I know in English, I use a language software called fluenz which uses pinyin as one of the key learning tools, IMO it is much easier and efficent way of learning Mandarin than audio lessons alone, plus the pinyin helps with understanding the tone marks and pronunciation. Yeah, but when she makes fun of me for saying "ren", instead of "yen" (for people), that's when I hang it up! Time for her to learn English!