Answer 1

To access a certain value in a string, or list we can print it's index.

For example, the string 'cat' has 3 letters. In programming we start counting at 0. So:
'cat'[0] = c
'cat'[1] = a
'cat'[2] = t

So in the example you gave, the third character would be found by counting 0, 1, 2.
'hello'[0] = h
'hello'[1] = e
'hello'[2] = l

A strings third letter could be returned this way. The same rule applies for a list. To get the third item from a list, you do it like we did with the string

Answer 2

If you have 'no' idea then revise the lessons you read