LaTeX Glossary and Index: Creating Reference Materials

\usepackage{glossaries}

\makeglossaries

\newglossaryentry{latex}
{
  name={LaTeX},
  description={A document preparation system},
  plural={LaTeX}
}

\newglossaryentry{pdf}
{
  name={PDF},
  description={Portable Document Format},
  plural={PDFs}
}

\begin{document}

The \gls{latex} system is powerful.
The \Gls{pdf} format is universal.
\glspl{pdf} are widely used.

\printglossaries

\end{document}

pdflatex document
makeglossaries document
pdflatex document

\usepackage{glossaries}

\makeglossaries

\newacronym{api}{API}{Application Programming Interface}
\newacronym{cli}{CLI}{Command Line Interface}
\newacronym{json}{JSON}{JavaScript Object Notation}

\gls{api}
\gls{cli}
\gls{json}

% Plural
\glspl{api}

% First use
\acrfull{api}  % Full form first time
\acrshort{api} % Short form
\acrlong{api}  % Long form

\newglossaryentry{algorithm}
{
  name={algorithm},
  description={A step-by-step procedure},
  plural={algorithms},
  see=[see also]{procedure}
}

\newglossaryentry{machine learning}
{
  name={machine learning},
  description={Systems that learn from data},
  sort={machine learning}
}

\usepackage{makeidx}

\makeindex

\begin{document}

\index{LaTeX}
\index{formatting}
\index{packages!hyperref}

\printindex

\end{document}

\index{term}
\index{term!subterm}
\index{term|hyperpage}
\index{term|seealso{related}}
\index{term|textbf}
\index{term@\textit{term}}

\index{A|see{B}}
\index{A|seealso{B}}

\usepackage{imakeidx}

\makeindex
\makeindex[name=subject,title=Subject Index]
\makeindex[name=name,title=Index of Names]

\index[subject]{Typesetting}
\index[name]{Knuth, Donald}

pdflatex document
makeindex subject
makeindex name
pdflatex document

\usepackage{glossaries}

\setglossarystyle{long}
\setglossarystyle{longheader}
\setglossarystyle{long3col}
\setglossarystyle{altlist}
\setglossarystyle{altlistgrouped}
\setglossarystyle{bookindex}
\setglossarystyle{index}
\setglossarystyle{indexgrouped}
\setglossarystyle{mcolindex}
\setglossarystyle{mcolindexgrouped}
\setglossarystyle{mcolalttree}
\setglossarystyle{alttree}
\setglossarystyle{tree}

% Change symbols
\defglsentryfmt[main]{\glsentrytext{\glslabel}}

% Add to groups
\glsaddstoragekey{group}{}{\glsentrygroup}

% mystyle.ist
headings_flag 1
heading_prefix "{\\bfseries "
heading_suffix "}"
group_skip ""

\usepackage{imakeidx}

\makeindex[title=General Index,intoc=true]
\makeindex[name=subject,title=Subject Index,mystyle.ist]