A Virology lecture series on YouTube by Vincent Racaniello (spring 2019) on the very basics of Virology, Virological techniques, etc, including pdf’s of the slides used. Focus on lectures 1-7, scroll/fast forward if information density is too low for you. Particularly look at lecture 6 on RNA viruses and how they replicate. Then go on to lectures 10-13. Continue to your liking 😉