A review by swaggle
Utilitarianism by John Stuart Mill, George Sher

2.5

A good overview of the basic principles of Utilitarian ethics, worth a read if you want a textbook defense of Utilitarianism. It may not answer all your questions but some of the general ideas are there. Would recommend coupling this with a visit to the Stanford Encyclopedia of Philosophy which explains in more detail objections and weaknesses in J.S. Mill's argumentation.