Find the official Unstable SMP Java application or invite source
Check whether the server is public, private, or application-based
Join the official Discord or community page if required
Read the current entry requirements
Complete any application form if one exists
Provide your Java Edition Minecraft username
Make sure you own Minecraft Java Edition
Use the correct server IP if it is publicly shared
Wait for approval if the SMP is whitelist-only
Accept any server rules before joining
Connect using the approved launcher and version
Ask the staff or community for the latest join steps if needed