This easy-to-read booklet, published by the Mid-Atlantic ADA Center, is designed for people with intellectual disabilities, learning disabilities, or anyone else who would like a short, simple overview of the ADA.
You can download the PDF here: https://www.adainfo.org/sites/default/files/ADA-Overview-Easy-Read.pdf.
I wrote this resource while working as an intern with TransCen, Inc in 2015-2016.