I'm interested in improving my statistical skills. I have a good understanding of basic stats but would like to dive into more advanced statistics (particularly in soccer). Are there any good statistical books/blogs/resources that you would recommend? Thanks in advance.
Don't know about soccer, but both of Andrew Gelman's books are bibles for me (economics). Data Analysis Using Regression and Hierarchical/Multilevel Modeling[1] and Bayesian Data Analysis[2]. He uses R. They're approachable, but get into some real hardcore stats.
[1] http://www.stat.columbia.edu/~gelman/arm/ [2] http://www.stat.columbia.edu/~gelman/book/