frequentist statistics

learning statistical modeling

Susan Holmes and Wolfgang Huber have written the very comprehensive book Modern Statistics for Modern Biology, and you can read it all online for free. Most importantly though, it has example R code and excercises to follow along. Thus, if you want to learn all about frequentist statistics---with application in modern biology---this is the perfect resource.

all the hypothesis tests

The Handbook of Biological Statistics by John H. McDonald has great explanations of all the statistical tests you could ever need in biomedical research. And it has this amazing tabular overview of all of the statistical tests, so you can easily choose the one you need for your data set at hand.

If you want to understand a bit more about how the theory behind a number of these tests is very similar (and thus not all too hard to actually understand), you can check out Common statistical tests are linear models by Jonas Kristoffer Lindeløv. The article has a great summary table and provides example code in R. So it's also a great resource if you just want quick example code for running a particular statistical test in R.