Install the the ceph-deploy tool for the latest LTS version of Ceph, on the latest version of Debian.
Disable the onboard speaker to prevent it buzzing whilst you're working.
Instructions for getting Compiz and Emerald working in Debian 9 Mate.
If your sound stops working, and you're using Seafile, read this.
This tutorial will show you how to set your Debian 9 server up as a KVM host.
This tutorial will show you how to install various versions of MySQL server on Debian 9.
Things you probably want to do right after installing Debian 9 server.