AutiKT Ji, how have you been? Long time :). Wonderful question! Buddha was asked this question by an old illiterate lady something like this: "Lord, I am an illiterate lady, Dhamma must be a field of scholars. However, I have desire to know know it. Will you please tell me in a simple language so that I can comprehend it?" Buddha replied: " Old Lady, Dhamma is very simple, listen mindfully: सब्ब पापस्स अकरनं, कुसलस्स उपसम्पदा। सत् चित्त परियो दपनं, यतं बुद्धानुसासनी।। (Abstain from doing unwholesome, Work hard to multiply wholesome. Strive hard to keep your mind clean, this is the teaching of all Buddhas )" Dhamma is the teaching of the Buddha and Buddha is the one who knows Dhamma. In summary Dhamma is: 1. Don't do which is unwholesome! 2. Do what is wholesome! 3. Keep your mind clean! Please feel free to ask if you want further explanation.