Here are introductory books on carnatic music theory. I wrote these books as an easy-to-follow introduction, for people who are interested in this system of music.
Written in English, this material is prepared for the syllabus framed by Potti Sriramulu Telugu University. Government music colleges in Telangana and Andhra Pradesh follow this syllabus. If you’re a music student from these colleges or a private candidate, preparing for Certificate in Music (Karnataka Sangeetham) examinations, these books will be of great help.
These texts are updated and improved from time to time. You are encouraged to share the link to this page, or simply beautifulnote.com/theory instead of sharing, hosting, or linking these pdf files directly.
Edition 2.6 (Oct 2019)
Edition 2.1 (Oct 2019)
Detailed Syllabus in Telugu, for all years of Certificate and Diploma courses can be found here. It's a scanned-and-reformatted copy of the official syllabus from some time ago. Do contact the university/college and ensure it is valid and current.