Three iBooks have been designed to help families and professionals alike to get started with Augmentative and Alternative Communication (AAC).
Book 1 - "Getting Started with AAC: Designing and using alphabet charts"
Book 2 - "Getting Started with AAC: Using low tech symbol based systems with children"
Book 3 - "Getting Started with AAC: Access to low tech symbol based resources when pointing is difficult"
Here is a link to the books which were developed out of the DfE Prospectus Project with ACE Centre, Communication Matters and 1Voice.
The books can be downloaded from the apple bookstore, or simply read online.