[O] latex export beginner

[Steven Arntson]

I'm taking my first baby steps at exporting an org file to LaTex. I know
a little about org-mode, and almost nothing about LaTex.

I type C-c C-e l o

A file named file.tex is produced, but the process halts with an error:

org-latex-compile: PDF file ./plm.pdf wasn't produced: [LaTeX error] 

A program called pdfTex produces a buffer with extensive output,
including:

! LaTeX Error: Missing \begin{document}.

This seems like some markup that should probably be included in my file
automatically as part of the export? Shoud I add "/begin{document}" to
my org doc?

Thank you!
Steven Arntson