Saf.org stands for the Second Amendment Foundation.
They are entirely dedicated to provide information on firearms possession. They are constantly trying to promote a better comprehension about Constitutional heritage on privately owned firearms. On the main page of the web site there is a navigator bar on the left side containing diverse categories: protect your rights, resources, sponsored publications, and external resources, etc. Some of their resources are State Constitutional Protections, SAF book list, etc. They feature some publications, like: Gun Week, The Gottlieb Tartaro Report, and Journal on Firearms and Public Policy, among others. In addition, there is a whole section designated to women and guns in which you will access to article’s information on personal protection and self-defense. If you want to be informed on the firearms facts, check out the site and take a look at the news and releases. In case you’d like to do a donation, you can do so through their site. 
