install latex package

If there is an .ins file, run latex on it:
$ latex file.ins

If there is a .dtx file, run latex (or pdflatex) on it to generate the documentation. It may need more than one run.
$ latex file.dtx

If there is a .idx, this is an index:
$ makeindex filename

There may also be a .glo file produced, that is the glossary, run this instead:
$ makeindex -s gglo.ist -o name.gls name.glo

Finally install the files locally
If not already existing, create the directory ~/texmf, then copy the files following the guide http://en.wikibooks.org/wiki/LaTeX/Installing_Extra_Packages

Update the tex index:
$ texhash ~/texmf