Writing and publishing — not to mention selling your book after it’s published! — is hard work. But are there ways to make it easier on yourself without breaking the bank? What upfront costs can you save on, and what should you invest in now that will pay off later?

In Part 4 of the Book Publishing A to Z series, Coach Tam lays out four key publishing terms that all begin with the letter “P” — and why they matter. When you invest wisely in these things, they can save you big time down the road by helping you avoid costly mistakes.