The five words you actually need
PPC: pay only on a click. Bid: the most you will pay per click. ACoS: the share of ad sales eaten by ad spend (lower is better). Negative keyword: a search you block. Search term: what a shopper actually typed. Master these five and the rest follows.
Your first week
Launch one Sponsored Products automatic campaign with a small daily budget. Let it gather data. Do not touch it daily — give it a week. Then read the search-term report and act on what you see.
Beginner mistakes that cost money
Bidding too high on everything; never adding negatives; judging a keyword on five clicks; turning campaigns on and off impatiently; and ignoring ACoS until the bill arrives. Each is avoidable once you know to watch for it.
When to automate
As soon as the weekly cleanup becomes a chore you skip, it is costing you. AIAdKing runs the beginner routine — bids, negatives, dayparting — every night with a plain-English reason for each change, so you learn from what it does while it does it.