I received this offer in an email from MarketWatch. Sign up  and get a copy of Lighbulb Press’ Investing Essentials booklet which “contains the most widely-read pages from The Wall Street Journal financial guides.”
I would bet you that someone from Fidelity will contact you so I’d just leave the telephone number (optional anyway) blank and enter a spam email address if you don’t want to be hassled.
Fine Print: Lighbulb Press is an independent company and is not affiliated with Fidelity Investments. No contribution, transfer of assets or account opening is necessary to be eligible for this guide.