As John says, you use Share to output your project. Export is only relevant for saving out Titles for re-use in other projects.
Insanity is hereditary, you get it from your children.
Always best to give version of Premiere Elements version being used and on what computer operating system it is running.
The File menu has not be a choice for export other than title from Titler title since the days of Premiere Elements 7. Since then (later than Premiere Elements 7 through 10, the exporting is done exclusively in the Share section; Premiere Elements 11, the exporting is done in a comparable section named Publish+Share/.
Whatever version you are using, please review your project settings and export settings to make sure that they are appropriate for your source media and the intended export of them. If you have any questions about that, please do not hesitate to ask.
I haven't yet purchased a how-to book for my Premiere Elements 10 (or for any PE for that matter), and so perhaps an articulate and detailed discussion of source media, project settings and export settings are there. Whether or not a setting is "appropriate" for the intended export has me baffled, and so if you have some good reference I'd appreciate the recommendation.
If you're interested in version 10, I've got a free 8-part Intro to Premiere Elements tutorials series that would be a good place to start. It's got exactly the kind of information you're looking for.
I've also got an 8 part Basic Training series for version 11.
Thanks for the follow up.
From what you wrote, you have Premiere Elements 10. Is that on Windows 7 64 bit or other. For now I will assume Windows 7 64 bit. If version 10 is on Windows 7 or 8 64 bit it is a 64 bit application running in the 64 bit system which makes it possible for full use of the 64 bit resources. That is good news especially when you are trying to take a large project to completion.
You set up the project preset in the new project dialog to match the properties of your source media. That setting directs the program to establish the right space in the Edit Mode Monitor for editing purposes. That project preset also directs the program as to what disc menu set (s, w, or hd) will be available to you in the disc menu section. The project preset also has more subtle effects on the project settings.
What is you plan for exporting your Timeline, export to file saved to the computer hard drive or burn to disc DVD or Blu-ray? Keep in mind that the setting for the project preset do not prohibit variations in the export choice under most conditions. If you post a description of your source media and how you would like to export it, I will offer some very specific guidelines on that.
If you do go the purchased book route, please try for one which is specific to your version 10. There has been a marked change in interface starting with version 11. Often principles remain the same from version to version, but features do not. And, I always write "It is very frustrating to be armed with principles when you cannot find a feature."
I suggest that you start with the Premiere Elements 10 Help PDF and then decide what next.
Also check out
A lot of these links that say version 10, roll over to 11.
Steve Grisetti, the moderator of this forum, writes books on Premiere Elements if you are interested in the purchased book route.
Hope the information above is helpful. Above all do not hesitate to ask if you have questions on your Premiere Elements workflow or need clarification on anything written.
I did not see SG's post before I submitted this reply to you.