Renaming and resetting Chapter in LaTeX

I have two questions in LaTeX:

1. How to reset the chapter counter to 1 or to set it to any other number?

2. How to rename Chapter 1 to Paper A? To rename it to Paper 1, I have this solution:

   \renewcommand\chaptername{Paper}
   

The first chapter then becomes Paper 1. But I can't get to rename 1 to A so as to get Pap开发者_StackOverflow中文版er A.

This is from memory, but for the first:

\setcounter{chapter}{1}

And for the second:

\renewcommand{\chaptername}{Paper}
\renewcommand{\thechapter}{\Alph{chapter}}

For the first:

\setcounter {chapter} {1}

For the second, try using \Alph - this might work:

\setcounter {chapter} {\Alph{1}}

See this.