
You can place the original document into the new one the way you would place images (the pages won't be editiable, so they essentially are images, but you don't have to go the extra step of saving them as PDF, tiff, eps, etc. To impose manually, save your document and create a new 11x17 landscape document with half as many pages as your original. Doing it manually can cause you some headaches. There are InDesign plugins that will impose for you (as well as ways to impose a PDF), so you may want to Google to see what you come up with. Unless you wanted to feed one sheet at a time into the printer and turn the sheet manually (which I suppose you could also do with the Print Booklet command), that's what you would have to do, but you would have to impose manually into another document first. If you use the Print command instead of the Print Booklet command, it will allow you to do things like printing only odd or even pages, and print in reverse order. If your printer can't do that, you may have to do it manually. You will need to print this to a printer that can duplex (print on a sheet, flip the sheet and print on the back side, then repeat on the next sheet, etc.) for this to work with the Print Booklet feature (as far as I can tell-I don't use the feature myself, so that's what it seems like in the short amount of poking around that I did). You will have to set the paper size in the Print Settings window to 11x17 landscape, but it should print the booklet correctly. The easiest would be to select File>Print Booklet. If, on the other hand, you are printing this yourself, there are a few ways to do this. As a matter of fact, if you were to impose the booklet (thinking that you were doing the print provider a favor by lightening their load) and do it wrong, they would have to undo what you did, which would make their job harder, and you would likely be charged a fee for this. Imposition is normally the job of the print service, so if you are not printing this yourself (on a laser printer or networked copier, for example), you should leave it as a standard 8.5x11 portrait facing-page document.

The process you are asking about is called imposition, in case you want to Google for additional information.
