A receipt is on its way to the email address you gave at checkout, from samuel@familyblackoutplan.com.

A second email carries your login for the member area. If it is not there in five minutes, look in the spam folder, then write to samuel@familyblackoutplan.com and I will sort it out myself.

Inside, the first lesson takes you straight to the calculator. Four facts about your home, a shopping list, a one-page plan, a card for the cupboard door.

If you added the Household Pack, its five short plans are in the second part of the same account. Start with the main plan; the pack makes more sense once the four numbers exist.