Beyond Good and Evil by Friedrich Nietzsche, trans. Walter Kaufmann
An excellent translation of what I would recommend to a first time Nietzsche reader. The book is organized into aphorisms by Nietzsche, in sections that cover his main ideas and develop them. A great read to dispell the myth that Nietzsche is a nihilist. Nietzsche's sentences can grow a bit long and difficult to follow, but overall an easy read for those new to existentialism, or new to philosophy in general. Kaufmann also includes translation notes to further increase comprehension of what Nietzsche means to communicate.