[KevinH]

Please note:

1. epub3 does not specify a normalized layout for an epub unlike the old epub2 recomendations.

2. The BookBrowser is *not* a file browser. It shows "virtual folders" that are groups files of similar type to make working with files possible no matter the actual internal layout used in the epub.

3. To see the actual full path for each file inside the book folder, you have to enable that in Sigil Preferences.

4. The nav xhtml file may be inside the Text folder or someplace else as long as the opf manifest is correct. Sigil will default to creating it beside the opf unless otherwise informed.

5. Use Sigil to select images to insert, or insert links, and it will create the proper relative paths for you.

6. If you want to craft and enter links by hand, you should enable BookBrowser to show the full book paths for all files so you can create the proper links.