<p>Beware of starting a third language. I used to be completely fluent in Spanish. Then I took German. The German completely messed up my spoken Spanish, and vice versa. My brain cells for Spanish are hopelessly intermingled with those for German, which results in spoken language that is a combination of the two.</p>
<p>Some people have the knack to learn multiple languages, but often the languages were learned when they were children. After you reach adulthood, your brain is less able to deal with it.</p>