Hi Guys,
Does anyone know any good sources to learn the more advanced probability topics such as multivariate distributions and joint distributions etc..

For example, on youtube, there is a large collection of "Probability on Excel" videos by a user called "Excelisfun". The fact that all the probability was shown via Excel was really helpful. It's just a simple introduction though, so I was looking for something in more depth.

Anyone know any other sources? (other than Bionic Turtle)

I am looking to learn about multivariates, joint distributions etc.