Renaming and resetting Chapter in LaTeX

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.