Would you like a full ready-to-publish blog post written out, or help finding a safe download link for the latest version?
I notice you're asking for an "Xposed Installer 3.0 APK" — just a quick clarification: the official latest version of the Xposed Installer is actually (or newer forks), not 3.0. Version 3.0 was an early material design update from years ago. xposed installer 30 apk