This course is to introduce fundamental principles of Nyaya and Vaiseshika systems to the learner. This course is designed as a study of the text 'Tarkasamgraha' by Sri Annambhatta. This is a popular text that has been studied by all the students of philosophy. This text introduces the categories accepted in Nyaya- Vaisesshika systems and to the epistemology. The study will help the aspirant to acquire the skill in critical thinking and analysis. This is a widely studied  Prakarana for beginners of Indian philosophy.