It's never too old or too young to learn Chinese.
I recommend Hanbrige Mandarin to everyone learning Chinese! I found this school on a Google search cause I live in Australian and I need to learn Chinese online. I was very impressed by the teaching method and the virtual classroom, and of course, the experienced and professional teachers! I started with Hanbridge Mandarin half a year ago, which turned out to be perfect, now I'm able to chat with my Chinese friends easily.