
BSR is a position in a race, not a sales counter: hourly, decaying without sales, per format and store. How it works and what each level means in daily sales.

Your first Amazon ad campaign, step by step: which type first, bids and budgets that can't hurt you, the two-campaign structure, and whether it pays off.

Zero sales has two causes: nobody sees the book, or people see it and don't buy. A 10-point checklist tells you which, and the fix, before spending on ads.

KDP's 70% royalty is not automatic and not always better: how the 35% and 70% ebook tiers work, the delivery fee, and the pricing traps that halve your royalty.

Amazon withholds 30% of your US royalties if you're not a US person; the tax interview with the right treaty claim can cut it to 0%. How it works, with W-8BEN.

KDP Select trades ebook exclusivity for Kindle Unlimited reads, promo tools and 70% in four more stores. Whether it wins depends on your genre's read-through.

An account-level ACOS hides the losers your winners subsidise. How to compute net profit per book, the costs authors forget, and what to scale, fix or pause.

Five-figure screenshots say nothing about what KDP really pays. The honest math: what one book earns at realistic volumes, and the three levers that matter.

The KDP dashboard, Royalties Estimator, Orders and Payments reports differ in speed and in what they measure. What each contains, and which one to trust.

KDP pays royalties about 60 days after the month they were earned, per marketplace and currency, above thresholds. The timeline, and why one seems missing.