Princeton University （2011 updated） Introducing R
1 Introduction
1.1 The R Language and Environment
1.2 Bibliographic Remarks  

2 Getting Started
2.1 The R Console
2.2 Expressions and Assignments
2.3 Vectors and Matrices
2.4 Simple Graphs  

3 Reading Data
3.1 Lists and Data Frames
3.2 Free-Format Input
3.3 Fixed-Format Input
3.4 Printing Data and Summaries
3.5 Plotting Data  
4 Linear Models
4.1 Fitting a Model
4.2 Examining a Fit
4.3 Extracting Results
4.4 Factors and Covariates
4.5 Regression Splines
4.6 Other Options

5 Generalized Linear Models
5.1 Variance and Link Families
5.2 Logistic Regression
5.3 Updating Models
5.4 Model Selection

6 Conclusion
References