Maricopa County Superior Court - Probate and Mental Health Department
Available on the Maricopa County Superior Court's website is a glossary of probate terms and a compilation of probate court forms. The formal/informal probate webpage includes a brief video, available in English and Spanish, on the difference between the informal and formal probate process.
Arizona Judicial Branch - Probate Law
The Arizona Judicial Branch's probate webpage provides a link to probate forms.