Export pdf for print

First thing you should do is ASK YOUR PRINTER what they want.

That aside, there are some general principles that are pretty universal:

Export as single pages. The printer needs to be able to arrange the pages in the proper relationship to fit the sheet it will be printed on, and this will vary on the number of pages you have in your file (this is called imposition). They can't do this if you export spreads.

Inside bleed is often unnecessary, and most printers can deal with removing it if necessary during imposition. It would be required for spiral/wiro type binding, and might be needed for other books that have a large number of pages folded together (a signature, or some printer call it a form) where the paper thickness buildup requires that the outer pages be moved further apart to keep the content from getting lost in the binding (called creep, or shingling). This is also handled by the imposition software, so not something you need to worry about. If you don't have content that extends to the inside page edge you don't need inside bleed at all.

So, basically, you can export as single pages using the document bleed settings in most cases. If you add marks, and you probably should add crops, be sure to change the offset amount to equal at least the same as the bleed, if there is bleed involved or you risk the marks showing in the finished product. But again, ask the printer. Many will even have a PDF preset for you to use or a set of specification for you to follow.