I have the basics down for German, French, Spanish and Japanese. I have many Japanese friends from when I lived there. I live in a German based town in the USA now and my kids are learning German from their dad's family. My parents speak French. I went to a Spanish speaking school. I am buying me a present for the coming holidays and I want to get a Rosetta Stone to complete my learning. I will eventually learn them all, but which one should I start with?