INCCA (International Network for the Conservation of Contemporary Artwork): A searchable database featuring artist interviews, project reports, and methodologies regarding contemporary art
https://incca.org/

Terra Foundation for American Art: Provides resources on "Common Core Questions for Discussing Artworks," which acts as a guide for critical analysis and interpretation.
https://collection.terraamericanart.org/start

CCCA Canadian Art Database: Focuses on contemporary Canadian art, providing documentation and, in some cases, Q&A-style information about artists and their work.
https://ccca.art/

Conservation & Art Materials Encyclopedia Online
https://cameo.mfa.org/wiki/Main_Page