What is the most logical next event?

How to put up shelves 
Decide where you would like to put up the shelves. 
This is mostly up to personal preference, but factors such as opened doors and stud placement should be considered when choosing a location. 
Find the stud closest to where you want your shelves and mark it with a pencil.
A stud is the wood framing that comprises the inner structure of the walls. It's essential to find a stud when putting up shelves because shelves drilled into dry wall are not well supported and will collapse.