I'm sure there are some great video lectures on the subject as well, but unfortunately I can't point you to any relevant material since textbooks is what I used when I was in college. But if I had to guess, the latest relevant MIT OCW course that has video lectures available would be sufficient.
Assuming you have some freshman-college math literacy, here are a few great introductory books to Probability theory:
https://www.amazon.com/Introduction-Probability-2nd-Dimitri-... https://www.amazon.com/Elementary-Probability-Theory-Introdu... https://www.amazon.com/Introduction-Probability-Theory-Appli...I'm sure there are some great video lectures on the subject as well, but unfortunately I can't point you to any relevant material since textbooks is what I used when I was in college. But if I had to guess, the latest relevant MIT OCW course that has video lectures available would be sufficient.