Hi and welcome to the forums. It's great to have you here! Please browse the forums and add to any discussions that interest you, and please let us know if you need any help. Here is a link to a thread where we're talking about sign language
http://forum.brillkids.com/general-discussion-b5/signing-with-your-child/. If you have any questions about sign language, post them there, and we will try to help!
Does it work? Definitely. Here is our editor, Maddy's, blog. Her daughter is very good at sign language, and she is under 1!
http://www.brillbaby.com/index/blog.php.
Hope to hear from you soon!
Nikki