For anyone looking for a refresher, I highly recommend this: https://bookdown.org/probability/beta/ https://bookdown.org/probability/beta/ This is actually co-

For anyone looking for a refresher, I highly recommend this: https://bookdown.org/probability/beta/ https://bookdown.org/probability/beta/ This is actually co-written/edited by Joe Blitzstein, who teaches Harvard's Stat110. What originally sold me on taking a look is this snippet from the foreword: "This book is primarily a teaching tool, and thus we are not very concerned with proofs unless they promote understanding...There are no Statistics or linear algebra prerequisites."