Why are my sections numbered 0.1 …?
What happens is, that the class numbers sections as
“<chapter no>.<section no>”, and until the first
\chapter has appeared, the chapter number is 0. (If you
\chapter*, which doesn't number the chapter it produces, the
problem still arises.)
If you're doing this, it's possible that the article class
is for you; try it and see. Otherwise, put a
your sections, or do away with section numbering by using
\section* instead. An alternative way of avoiding numbering is
“unnumbered sections in the table of contents”.