What is the author's style in the nonfiction book, 'Tis, A Memoir?

The novel is written in a free flowing manner, broken down into a prologue and fifty six chapters. The chapters vary in length from two pages to more than ten, and describe different events in the life of Frank McCourt. The narrative is rambling and free flowing, with no differentiation between quotations and descriptive passages. McCourt simply relates the tale of his life and the people in it, as if telling his story over a drink in a pub rather than in print. This is a bit difficult to adjust to at first, but once the reader is used to McCourt's style of writing the tale is easy to follow, providing the reader with a window into the past.