This self-study guide provides a self-study route through the SPELL framework and supporting people on the autistic spectrum using a person-centred approach that also promotes neurodiversity.The book guides the reader through the materials and when to watch particular videos and do the various exercises and activities.A copy of the book is also included in the Understanding and Responding to Autism: The SPELL Framework 2nd edition Training Pack as it mirrors the trainer's script from the pack and provides the background information needed to run the training, provided in a convenient format. It includes audio files, videos and exercises to promote independent thinking and learning.The aim is to promote understanding of autism and to help people provide person-centred support to children and adults on the autism spectrum.This revision will elaborate on the SPELL framework as a way to both understand and support children and adults on the autism spectrum.