No, you should buy the official digital edition or physical book.
To fully master the content, use these complementary tools (most are free):
In this comprehensive guide, we will explore what this book contains, the legal realities of PDF downloads, the best (and legal) alternatives to get the digital version, and how to maximize your study efficiency with this famous textbook.
To successfully use the PDF of Lesson 1-1, you effectively need two PDFs:
Because a PDF is digital, you will be tempted to look at answers instead of writing them.