Licence

If someone is charging you for this book, do not buy it. It is free to download.

You may

Print it, copy it, share it, email it, put it on a USB stick, give it to anyone, translate it into any language, and adapt it for a group it does not currently serve well. Recovering the actual cost of paper and ink is fine.

You may not

Sell it, put it behind a paywall or a sign-up wall, wrap it in advertising, or take parts of it and present them as your own work.

If you build on it

Credit stays, and whatever you make stays free the same way.

Non-profits and community organisations

If you want to print copies at cost for people without reliable internet, that is what this is for. Ask. The answer will almost certainly be yes.

Licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0). Full legal text: creativecommons.org/licenses/by-nc-sa/4.0.