How to write emails to a professor (@Students: Please read it at least once in your life)
Arxiv Probability and Statistics
Undergraduate projects in University of California, Berkeley under supervision of Prof. Aldous
Probability for undergraduates maintained by Prof. Pipiras (@students: please try to read these interesting articles.)
Interested in a MATHEMATICAL SUMMER?
You may consider to participate in the REU program organized by the Department of Mathematics at University of Chicago.
A template for latex which I prefer and use
For math cheatsheets, check https://tutorial.math.lamar.edu/cheat_table.aspx. I have not checked all the formulae. It might have errors, and I do not take any responsibility for the errors.
Some old classics in statistics:
Probability theory and mathematical statistics by Fisz, Marek (One of the best book for the rigorour introductionthe subject)
Van Der Waerden, Bartel Leendert. Mathematical statistics. Vol. 156. Springer Science & Business Media, 2013.
Schmetterer, Leopold. Introduction to mathematical statistics. Vol. 202. Springer Science & Business Media, 2012. (One of the strongest book (recommended by Neyman himself!))