Beginning to Learn R

I have started to get my feet wet with R.  Perhaps later I will take on Python.

I am using the link below as a reference.

Trevor Stephen's Titanic Tutorial

So far, I have learned the following commands:

• setwd() - to set the working directory
• str() - to get the general structure of the dataset
• read.csv() - read from a csv file 
• data1 <- read.csv("csvfile.csv", factorAsString=FALSE)
• table() - summarizes data by count per value of the column
• data.frame()
• install.packages()
• rattle
• rpart.plot
• RColorBrewer
• library(rpart)