Mastering Monero is the leading educational resource about cryptocurrencies, privacy, and naturally Monero. Lucky for you and thanks to our community, the PDF is available completely free. If you prefer to have a paperback copy or digital edition on Kindle or Google, please use the links on our home page.
There is a small catch. You must use the free copy according to our Creative Commons License. That means no printing and selling your own copies, no making edits and releasing new versions, etc. As long as you read it though and distribute it for free as-is, you should be golden!
The noblest pleasure is the joy of understanding.