The one place you can use Ancestry without paying for a private subscription is your local library. But to keep a copy of any document you found you would either have to print it out or save it to a USB drive. Ancestry has just added another option. You can send it to yourself by email. Here are the steps. Click on it and check it out.
vea/24 April 2014
Newton Free Library
Library website: http://www.newtonfreelibrary.net
Genealogy blog: https://thecuriousgenealogist.wordpress.com
Genealogy LibGuide: http://guides.newtonfreelibrary.net/genealogy