Not likely I would give them my cc # though I'd love the reading material!
To download the document, all I did was to click the small PDF download button just above the two big buttons that will end up prompting you to set up an account.
No setting up an account, no giving any ID and certainly no CC#.
Goes without saying, for downloading anything from the Internet, either use a Linux OS or have a solid anti-malware and antivirus software firewall to protect your computer running MSOS.