1 Introduction 1.1 R website 1.2 Differences between R and S 1.3 Start with R 2 Data with R 2.1 Objects 2.2 Reading data in a file 2.3 Saving data 2.4 generating data 2.5 Manipulating objects 2.5.1 Creating objects 2.5.2 Operators 2.5.3 Accessing the values of an object: the indexing system 2.5.4 Accessing the values of an object with names 2.5.5 Arithmetics and simple functions 2.5.6 Matrix Computation