ICAI CDS Portal offers centralized distribution system for study materials, allowing students to register, order, track and submit feedback. Learn how to use the centralized distribution system ( CDS ) of ICAI to get free study material for CA courses. Follow the steps to login, select subjects, apply coupons and track your order online. The Institute of Chartered Accountants of IndiaSign In ICAI CDS Portal is a platform for students to order, track, and manage study materials provided by the Institute of Chartered Accountants of India.