title_body: What software should I use to write books, which can be exported to Lulu and CreateSpace? I currently use PagePlus X6 to typeset books. It has the capability to export to .pdf files and .epub files. However, the generated files are being rejected by Lulu and CreateSpace.
  Is there an alternative I can use which can prepare files for Lulu and CreateSpace easily?
  Some sample error messages received from Lulu:
  
  Your eBook has been rejected for improper capitalization. The first letter of all words in the title, subtitle and author name should be capitalized, except for the following words: a, an, and, for, from, of, or, the, to. The first and last word of the title and subtitle should always be capitalized.
  Your title should be the very first line of your document, with no blank lines or images above it, styled as Heading 1, to replace the broken link in your NCX. Style text as Heading 1 by selecting the text, then clicking “Heading 1” in the style toolbar.
upvoted_answer: For CreateSpace you essentially need to provide a PDF and do the layout by combining your output with images in the form of PDF output. To conform to their formats, you would still need a template for the editing software that you use, that generates a PDF that can be merged with such templates (and not come into the margins as they warn you not to).
  
  The CreateSpace forums give some, but IMHO not very much more helpful tips (e.g. here)
  
  It looks like CreateSpace is more reader-customer oriented and not so much bookwriter-customer, I had more help from the publisher for the single book that I helped typeset that made the shelves, and I was the first generating electronic input (from LaTex) for them.