How many pages in a pdf download for Necchi Instruction manual for Necchi Model 3101 FA?

When the down load opens up on the screen, in a small tool bar at the top of the pdf section there are areas that show page numbers , zoom in / out expand size etc the number of pages will be there shown as 1 /24, or 50,or 600 etc ( 1 / of the number of pages in the down load )
if you click on the scroll bar on the right of the page proper and scroll down , as you pass each page break it shows the next page number
if you scroll down the page you will come to a contents list and that will also show the number of sections in the manual and that will indicate how many pages you can expect
to reduce paper wastage from a normal house hold printer when you print from the printer logo in the bottom right of the page you get the printer up and where it says print all , change that to print odd pages ( or even pages ) or or print pages and this is where you put in the pages that you want printed -such as 1,3 5, 7 etc
when the print run is finished put the whole lot of printed pages turned around and back in the printer then print the page numbers that you missed on the first print run this will result in a booklet with printing on both sides of the page and reduce the number of sheets used in printing