大家好，我是William李梓峰，欢迎阅读我的 R 语言学习日记。

我不太喜欢看书，学习新东西一般会看官网或者靠谱的英文教程，考虑到上手速度问题，我选择直接看 TutorialPoints 的教程。

按照惯例，先给出教程链接：

下面是该教程的个人手工翻译，略微删减部分不重要的内容。

R 语言到底是个什么鬼

R is a programming language and software environment for statistical analysis, graphics representation and reporting. R was created by Ross Ihaka and Robert Gentleman at the University of Auckland, New Zealand, and is currently developed by the R Development Core Team.
R 语言是一门编程语言，它能够处理数理统计建模分析，数据可视化和数据报表。R 语言由新西兰的奥克兰大学的两名老师 Ross Ihaka 和 Robert Gentleman 所创建，现在由 R 语言核心开发小组负责维护更新。

R is freely available under the GNU General Public License, and pre-compiled binary versions are provided for various operating systems like Linux, Windows and Mac.
R 语言是完全开源免费的，使用 GNU 通用公共开源协议，提供了预编译的二进制版本，用于 Linux，Windows 以及 Mac。

This programming language was named R, based on the first letter of first name of the two R authors (Robert Gentleman and Ross Ihaka), and partly a play on the name of the Bell Labs Language S.
这门编程语言以 R 为命名，基于两个作者姓名的首字母 R （Robert Gentleman 和 Ross Ihaka），就像贝尔实验室的一门编程语言 S。

怎么阅读本教程

This tutorial is designed for software programmers, statisticians and data miners who are looking forward for developing statistical software using R programming. If you are trying to understand the R programming language as a beginner, this tutorial will give you enough understanding on almost all the concepts of the language from where you can take yourself to higher levels of expertise.
本教程是为那些想使用 R 语言来开发统计相关软件的开发者，统计分析师和数据挖掘者而精心设计的。如果你想作为一名初学者来学习 R 语言，那么本教程会让你能够理解关于 R 语言的大部分必要知识，让你通过自学来提高自身水平。

需要注意的点

Before proceeding with this tutorial, you should have a basic understanding of Computer Programming terminologies. A basic understanding of any of the programming languages will help you in understanding the R programming concepts and move fast on the learning track.
在学习这门语言之前，你需要先了解基本的计算机编程概念（其实没什么大不了的）。因为如果你有编程的底子，学习 R 语言就很快了（其实也没多快）。

下面来段 Hello World

打印 Hello World.

print("Hello World")

两数相加

print(23.9 + 11.6)