Book excerpt: The #ActuallyAutistic Guide to Advocacy takes an in-depth look at the key elements of effective, respectful, inclusive advocacy and allyship. Every topic was chosen, shaped, and informed by #ActuallyAutistic perspectives. The step-by-step guide discusses various aspects of how autism is perceived, explores how best to speak up for individual needs, and introduces advocacy for the wider autistic community. Each step outlines one vital aspect of advocacy and allyship, such as emphasizing acceptance, avoiding assumptions and assuming competence. The advice and strategies laid out in this guide center the wisdom and experiences of Autistic people and enable the reader to confidently speak up with insight and understanding.