This selects the content of a paragraph.
^(.*)$
This additionally selects the selected number of beginning characters of a paragraph, but does not exclude them.
^[^.*{1}](.*)$
Depending on the type of regex you're using, you could use \K to reset the match after the first character, for example:
^.\K.*$
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.