The Dow closed down 68 points after negative vaccine news hit the tape and Jim Cramer is helping you navigate today's dip. Then, Cramer's fielding questions directly from homegamers and answering their burning questions on some of the biggest names in the market in the latest edition of "Voices Of Cramerica". Then, as the cryptocurrency play Coinbase prepares to come public, Cramer's digging deeper into the highly anticipated debut to see if it's something investors should have their eye on. Plus, Novocure Executive Chairman Bill Doyle.