There are 6 books in the "Starbender Series" in total. Multiple copies of 1-5 are scattered throughout the ship making them near impossible to miss. There is however only 1 copy of #6 & it is in Alex Yu's Suite in the Crew Quarters which is up the grav-shaft in the main lobby of the Crew Quarters area. You will need to progress a bit in the story prior to being able to access it.