All you need is the players handbook and some dice (get a full set from Chessex like this: https://www.amazon.com/dp/B01N8XRFBF/ref=cm_sw_r_cp_apa_EQZsBb1HK7EX7 ). Then go on YouTube and watch a show called Critical Role, they are 3 hours long per episode. After a few you'll be good to go.