Websites
Allegheny County Orphans' Court
PA Law Help
Allegheny County Bar Association: The Truth About Probate & Living Trusts in Pennsylvania
PALawHELP.org - https://www.palawhelp.org/issues/elder-law/wills-and-estates
PA Bar Association Consumer Legal Information
Blogs
There are numerous blogs on the internet, mostly by specific law firms. Justia has a great list available here: https://www.justia.com/estate-planning/
https://blog.feedspot.com/estate_planning_blogs/