If you have acquired the PDF, do not read it like a novel. Experts recommend a slower, more analytical approach:

Under international copyright law (specifically the Berne Convention and the DMCA in the US), downloading a copyrighted book without paying the author or publisher is illegal in most jurisdictions. While personal, private use is rarely prosecuted, distributing the PDF or uploading it to a public site can result in fines upwards of $150,000 per infringement.