The whole thing is free to read here, and always will be. This is the PDF — the one you can print, write in, and keep.
Pay what you want, including nothing at all.
£5 is what we suggest. Anything else is just as welcome — including nothing.
Cards are handled by Stripe. Prices show in your own currency.
The workbook is yours either way. Paying keeps the sky free to post on — it is never a condition of getting it.
One moment…