I did the document, I think.
Changed the page size in print to 5 X 8.
Saved it as a PDF while clicking preserve fidelity to embed the fonts.
Is that really all there is to it? With CreateSpace and Lulu I had to do the margins and the gutters, so I'm worried I'm missing something.
Thank you for posting the link RPatton.
So the page size is the trim size, but the margins are set in Word and not when you export to PDF.
For 5x8, I recommend starting with top: 1 in; bottom: .9 in; inside: .75 in; outside: .6275. In InDesign you set the pages to facing, not sure about Word off the top of my head. However, you want to see inside and outside margins, not right and left margins in the settings.
You can adjust those as necessary, but the inside margin should handle the average page count at that size. (I like bigger outside and bottom margins because I enjoy thumb room, so adjust to your personal preferences.) The 1 in top margin accommodates a running head with page numbers on the top. If you prefer page numbers on the bottom, you can decrease the top margin.
A note about gutters: Gutters are basically what you would allow for binding. POD binding is variable and it's not like running a large run print where the binding will be relatively consistent. So, when I plan for my margins, I take the gutter into consideration for my inside margin. Basically, what is the smallest margin I willing to do assuming the tightest binding. Hence that .75 in for the inside margin. I would much rather have excessive space between pages than not enough space. Using Ingram's min. specs of a .5 in safe zone from the trim, I add in the required gutter for the page count and then nudge it a bit more.
TL;DR I don't set gutters and just increase my inside margin so it "includes" the gutters.