This week's book giveaways are in the Cloud and AI/ML forums. We're giving away four copies each of Cloud Native Patterns and Natural Language Processing and have the authors on-line! See this thread and this one for details.
It costs more, but most of the materials in that kit are available on Amazon in paper form. (Or you could print the PDF.) You'd still have to buy the official practice exam electronically, but that's only a dollar.