This selects the content of a paragraph.
This additionally selects the selected number of beginning characters of a paragraph, but does not exclude them.
Depending on the type of regex you're using, you could use \K to reset the match after the first character, for example:
If you can't use \K, you should be able to use a negative look-ahead to ignore the first character of the string:
(?!something) is a negative look-ahead which ensures that whatever follows that matches what's in the parentheses is NOT included in the match. ^. is the character immediately following the start of the string.