Halfway through Jeffrey Skinner’s new book, “The 6.5 Practices of Moderately Successful Poets,” he quotes W. H. Auden: “Form looks for content, content looks for form.” It’s a pithy bit of near tautology that also happens to neatly describe Skinner’s thoughtful and genre-defying book. Skinner has not led a typical poet’s life, to the toms outlet online extent that there is such a thing. Raised in the quintessentially American working-­class enclave of Levittown, on Long Island, he spent many years as a private investigator before toms outlet landing, later in life than most professional poets, in academia. His book — at once a memoir, how-to, advice column, stand-up act, confession and, most of all, ode to the art form — edifies and entertains while reflecting on the unexpected turns that poets’ lives are bound to take.