DEMO: Read the instructions below and use the code in the editor to learn about indexes.

Index is the word we use to talk about position of a value inside of a list.

Indexes start counting at 0. So the first value in a list is at index [0]. The second value in a list is at index [1].

• Change the number of the index in the last line of code. Click Run to see the index change.

If you enter a number greater than 3, you'll get an index out of range error! Why?

To navigate the page using the TAB key, first press ESC to exit the code editor.