We all use many basic signs from Makaton as a matter of course. So although you do not know it you will be able to communicate some simple words already. Look on the Makaton website for their book of signs. It is well worth while learning some of the early stage words from that. The video is not a great deal of use a sit only shows how to make the sign - that is quite easy to follow in the book anyway. Also as suggested in other reply, the Communicate in Print is useful for signs and symbols around the room. It is quite easy to use without any training. Just some common sense and time to experiment. This is a bit off the direct help you aksed for but hope it may be of some help.