i just did a basic course in makaton at the start of this week and i swear by it ( ive been using a few signs here and ther my son is non verbal ) but i didnt know all so i went learnt and now i have heaps i can use what i love about it is u are assosiating the word with an action and the action with a sound

they have a website that helps

Makaton / Sed / Research Centres / The University of Newcastle, Australia

i have the makaton website for wa as well ut i dont think ur in western australia