Rigorous but elementary statistics for self study I want to start learning statistics. I have taken proof-based Calculus 1 and 2, as well as two proof-based courses in Linear Algebra (1 and 2). What is a good introductory-level (but rigorous enough) book to start self-learning statistics? Also, if you know about any other resources (other than books) to help my self study, you can recommend them. Thanks in advance!

Statistical Inference by Casella and Berger is the standard textbook for this. If you’re good at some elementary real analysis (say calculus at the level of Spivak, not necessarily Rudin), you have the mathematical background to handle most of it. Some multivariable calculus might be helpful to know, but the basics of partial derivatives and multiple integrals should be well within reach if you need to self-study them to understand some sections of Casella/Berger.
