This video demonstrates the Chatushra Jati and Khanda Jati. Chatushra Jati has 3 syllables (beats) Ta Ka Dhi Mi. Khanda Jati has 5 syllables (beats) Ta Ka Taa Ki Ta.
Chatushra Jati can be done in two ways.
1. As we begin with the right side, tap your leg once and raise it on the toes for [...]

A Jaati is a pattern that  gives us the basic feel of a Thalam. Read the article Tala System to get a hang of how it works. What you need to understand as a beginner of Bharatanatyam is that there are five Jaatis. Every jaati is denoted by a set of syllables. They are:
The Tishra, [...]