here are some flyshop links - FFP bulletin board has been closed due to infighting, but lots of info there.
FFP is real near Spring Creek in State College. Been there, good shop, very helpful
http://www.flyfishersparadise.com/
Right on the banks of Penns
http://www.thefeatheredhook.com/
Been there, good shop, good advice
Right in State College
http://www.tcoflyfishing.com/1index.cfm
Paul Weamer who popularized "truform" flies and authored 'Fly Fishing the Upper Delaware' works there
Other Misc Penns info
http://www.ultimateflytying.com/Penns.htm
And the local TU chapter page
http://members.acsworld.net/pnscrktu/local.htm