Max,Here are a couple of links for you.
1) Free Legal Advice for PA residents>, looks like a good and reasonable site; you post a question, they answer it and if more lengthy phone conversation is needed, there is still no charge.
2) PA Law on line, again, looks like a good site, lots of statutes etc. on line, with forms etc. I didn't see anything specifically about non-profit, but I am sure wiht some exploring it would point you in the right direction, as it had many links, also.
I hope this helps. Let us know what else we can do, esp. if it's hunting up more info, etc.
kat