In this video you will learn how to use R in your favor. With the correct implementation of loops and functions, you will see how R can help you work more efficiently and rigorously by automatizing processes. The video ends with a real example. 
 

0:00 Loops (for, while, ifelse)     
5:15 Functions  
7:50 Good Manners and Tricks   
12:24 Functions: Real Example