How to remove blank areas from a pdf document?

Question

PDF

In general, there is a manual that is very inconvenient to read due to the incorrect arrangement of pages on the sheet (screenshots are attached). How can you customize or change the document to make it easier to view the document?

Answer 1

Open the tutorial with Adobe Acrobat.
Enable Page Thumbnails
Select All Pages
Right Click on Thumbnails
Crop
Remove White Margins.
Save
Here it is, HAPPINESS!!!