diff --git a/README.md b/README.md
index 0062d85..7204dbe 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,22 @@
 # speedtest-logger
 A small script which loggs the results of speedtest-cli in a log file
+
+# Installation
+Put `speedlog.sh` somewhere and make sure it is executable (`chmod +x speedlog.sh`). If you run it now, it will create a file in working directory and put its results into it.
+
+## Automation
+I used systemd timers to run this script every 15 minutes. Copy `speedtest.timer` and `speedtest.service` to `/etc/systemd/system/`. Fix the path to `speedlog.sh` in `speedtest.service`. Then run:
+
+```
+systemctl enable speedtest.service
+systemctl enable --now speedtest.timer
+```
+
+Check the status:
+```
+$ systemctl status speedtest.timer
+● speedtest.timer - Test the internet connection speed
+   Loaded: loaded (/etc/systemd/system/speedtest.timer; enabled; vendor preset: disabled)
+   Active: active (waiting) since Wed 2018-05-02 13:21:05 CEST; 20h ago
+  Trigger: Thu 2018-05-03 09:30:00 CEST; 4min 44s left
+```