How to read Piano tabs

This article helps you to understand how to read the piano tab.
Here is the simple example - the well-known christmas song "Jingle bells":

2|---e---e---e-------|---e---e---e-------|---e---g---c---d---|---e---------------| 
b|---1---2---3---4---|---1---2---3---4---|---1---2---3---4---|---1---2---3---4---| 


2|---f---f---f---f---|---f---e---e---e---|---g---g---f---d---|---c---------------| 
b|---1---2---3---4---|---1---2---3---4---|---1---2---3---4---|---1---2---3---4---| 


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