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+# Usage
+
+Head to the **[Debian wiki](https://wiki.debian.org)** for information on how to use your Debian/GNU Linux system, notably:
+
+ - [Package management](https://wiki.debian.org/PackageManagement) (installing/removing/upgrading software)
+ - [Software](https://wiki.debian.org/Software)
+ - [Xfce](https://wiki.debian.org/Xfce)
+
+See the package lists in the sidebar for useful links about installed software.
+
+
+## Maintenance & security
+
+ * Only install software from your [package manager](https://wiki.debian.org/PackageManagement), do not run or install software or commands for untrusted sources
+ * Backup your data periodically to an external storage using [Back In Time](https://backintime.readthedocs.io/en/latest/quick-start.html)
+ * Only enter your administrator password to perform necessary system administration tasks
+ * Use strong (long) passwords/phrases, do not reuse passwords for different services (use the [KeepassXC](https://keepassxc.org/) password manager), use secure network protocols (HTTPS, ...), use disk encryption
+ * Security updates will be applied automatically [at least until 2022 and at most until 2024](https://www.debian.org/releases/) (unattended-upgrades)
+ * Keep your hardware in good condition
+
+
+## Issues
+
+* [Gitlab issue tracker](https://gitlab.com/nodiscc/dlc)
+* [TODO.md](TODO.md)
+* [Debian bug tracker (BTS)](https://wiki.debian.org/BTS)