As you can see in the title, we're going to learn Persian/Farsi language. This language is used in Iran, parts of Afghanistan, and parts of Tajikistan. According to the definition, the modern Persian language is a member of the Iranian branch of the Indo-European family written in Arabic script.
Overall, Persian is not a popular language, and not many people are interested in learning it, which makes it special for you, who came this far and want to read this book.
I'm not a professional teacher, but I'll try my best. If you had a question in mind or want to add a chapter about a specific topic, make sure you'll tell me. Have fun~
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