Finding position in text

I'm trying to make a code where it runs through ever letter in a long line of text and add capitalized words to a list. To start with this I need to know how to return a letter from the text based on inputted position, a block that might look like this:

Input: Position

Output: Character from text

If anyone knows how that would be great!

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Have a look at these text blocks, with some logic you should get where you want to be:

Also to capitalise first letter ?

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