Here are some snippets of AppleScript that you might find handy.

Prepend to the top of a page:

tell application "VoodooPad"
  prepend text "this goes at the top" & return to page "index" of document 1
end tell

Append to the bottom of a page:

tell application "VoodooPad"
  append text return & "this goes at the bottom" to page "index" of document 1
end tell

Create a new page:

tell application "VoodooPad"
  tell document 1 to create page with title "new page" with contents "This is a new page."
end tell

Export to iPod:

tell application "VoodooPad"  
  -- this is the path to your document.
  open "srv:Users:gus:Desktop:astest.vdoc" as alias
  tell front document
    export to ipod
  end tell
end tell

Getting text from a specific page:

tell application "VoodooPad"
	set theString to (text of page "index" of document 1) as string
end tell

A useless example that loops through all the pages and displays it's name and contents

tell application "VoodooPad"
    tell document 1
        repeat with i from 1 to number of items in pages
            set s to text of page i
            set n to name of page i
            display dialog n & return & s
        end repeat
    end tell
end tell

An example that loops through all the pages, and prepends some text to every page

tell application "VoodooPad"
    repeat with i from 1 to number of items in pages of document 1
        set n to name of page i of document 1
        prepend text "your text here" & return to page n of document 1
    end repeat
end tell

New in 2.5:

Sort and pull out pages by create page:

tell application "VoodooPad"
  set theDoc to first document
  tell theDoc
    set myList to page keys sorted by create date
    repeat with idx from 1 to number of items in myList
      set pageName to item idx of myList
      set s to text of (page pageName of theDoc)
      -- now do something exciting with s
    end repeat
    
    -- we could have also done:
    set myList to page keys sorted by modified date
    set myList to page keys sorted -- default, sorted by key
  end tell
end tell