I was glad to find the shaunakelly.com website which had exactly what I needed when working in Word on a 200-page engineering document. Her instructions ("How to create numbered headings or outline numbering") showed me step-by-step what to do. Shauna mentioned she had pulled a lot of information from Word "Most Valuable Professionals" site at word.mvps.org. I found a helpful compilation of Word keyboard shortcuts. It thought I knew a lot of them, but I haven't taken full advantage of the Function keys. (Whatever happened to those plastic templates that used to fit around the Function keys? Wow, I go w-a-y back!))
I also get regular help from e-mails sent by Allen Wyatt's site word.tips.net.