Not a direct answer to your question, but in the future, I am interested in learning Makaton.The reason is it opens a door to communcating with a lot more people.
It's a simplified approach to sign language, with differences according to location (the UK version uses symbols from BSL).
The idea is that it's designed for use by a wider community, such as people with learning or social difficulties not just deafness. My brother uses it working with people with autism. It's often used alongside speech but someone with a basic knowledge of Makaton can communicate with someone who speaks BSL.
It's reduced vocabulary makes it useful for carers etc. as well as focusing on the needs of those who might struggle with a large vocabulary or limited movement.
Some people would like it to be taught in all schools to at least a basic level; I hope the benefits are obvious.
http://www.makaton.org/
en.wikipedia.org/wiki/Makaton
Neil