Sorry for my simple question, but I don't know how to explain it right so google won't help me. Therefore I try here to get a answer.
So.. i use the front-page.php in my theme as startpage. I know that the index.php is used for all pages which have not set a file.php.
My question is: Which code goes in the index.php? The same I used for the front-page.php? Is this useful?
My current theme structure: