There are many classic resources available for reinforcement learning, and we encourage the reader to go through them:

• R.S. Sutton and A.G. Barto, Reinforcement Learning: An Introduction. MIT Press, Cambridge, MA, USA, 1998
• RL Course by David Silver from YouTube: https://www.youtube.com/watch?v=2pWv7GOvuf0&list=PL7-jPKtc4r78-wCZcQn5IqyuWhBZ8fOxT
• Machine Learning (Stanford) by Andrew NG form YouTube (Lectures 16- 20): https://www.youtube.com/watch?v=UzxYlbK2c7E&list=PLA89DCFA6ADACE599
• Algorithms for reinforcement learning by Csaba from Morgan & Claypool Publishers
• Artificial Intelligence: A Modern Approach 3^rd Edition, by Stuart Russell and Peter Norvig, Prentice Hall