Know the edition first
Confirm whether your game is Java Edition or Bedrock/PE. The installation method and compatible package types differ fundamentally.
Look for addon-specific packaging
Bedrock content is typically distributed in formats and folder structures designed for Bedrock. A generic Java JAR or source ZIP is not a Bedrock addon.
Check platform limitations
Mobile, console, and desktop Bedrock environments can have different import and file-access behavior. Follow instructions written for the exact platform you use.
Avoid conversion claims without documentation
Do not assume that a Java mod can be converted into a Bedrock addon. Treat such workflows as separate projects requiring their own documentation and testing.
Practical next step
Return to the compatibility section to compare ecosystems, or review the Download section before opening the supplied archive.