"Place books in scanner 0/3" is a mission objective in the side mission "Voice Over" in Borderlands: The Pre-Sequel
Walkthrough
Head back to where you went to kill the Dahl Soldiers. At the northern end of the office there, you will see a scanner. Approach it and place the Books on it.
Voice Over Mission Objectives
- Kill Lost Legion soldiers
- Find books 0/3
- Place books in scanner 0/3
- Upload books
Turn in: Jack's Office Bounty Board