One very frequently asked question regards the issue of linking to specific bookmark destinations within a PDF document. This Planet PDF Knowledge Base article addresses this issue.
KLWW: Is there a way to link from an HTML file to a PDF bookmark target?
CDAHL, Planet PDF Forum participant: You can link from an HTML page to a named destination in a PDF document with an HREF tag. This means that you will have to create named destinations in each of the positions within your PDFs that you wish to link to from your HTML pages.
Users may also want to read Planet PDF’s Acrobat Tip on Linking to Pages or Destinations Within PDFs for more information. Links of this type can also be created within PDF files using HREF tags, meaning that it’s possible to link from one PDF to a page or named destination in another using the Link Tool.