Downloads:
XposedInstaller_3.1.apk from this thread: Must be installed to manage installed modules, the framework won't work without it.
xposed*.zip from
http://dl-xda.xposed.info/framework: Must be flashed with a custom recovery (e.g. TWRP) to install the framework.
SDK21 is Android 5.0 (Lollipop), SDK22 is Android 5.1 (also Lollipop) and SDK23 is Android 6.0 (Marshmallow).
I only support the latest Xposed version