Pennsylvania Organizations

http://www.pafoa.org - Website of the Pennsylvania Firearm Owners Association.
http://www.paopencarry.org- Great information website for Open Carry in PA.

National Organizations

http://www.nra.org - Website of the National Rifle Association.
http://www.gunowners.org - Website of Gun Owners of America.
http://www.jpfo.org - Website of Jews for the Preservation of Firearms Ownership.

Informational Websites

http://www.keepandbeararms.com - Great information website for Gun Owners News.
The PA Consolidated Statutes - Searchable Index of PA Laws.