diff --git a/download_rad.md b/download_rad.md
index 8cb5ed0..a80658d 100644
--- a/download_rad.md
+++ b/download_rad.md
@@ -1,8 +1,19 @@
 # Download radiation data
 
-## Assumptions
 This step completely depends on [geigerlog](https://sourceforge.net/projects/Geigerlog/), a great open source tool written in Python 3. Currently my tool only supports CSV-exports out of geigerlog (`filename.hisdb.his`), although it should be easy to modify the default behaviour.
 
+When you return from a photo tour, you hopefully followed the [preparation](preparation) guide before to get the time on your devices set up correctly.
+
+## Setup geigerlog
+
+## Connect geigercounter
+
+## Download data
+
+### Export data to CSV
+
+## Assumptions
+
 When geigerlog is being used with a device with one 'geiger muller tube' this export file looks like this
 
 ```
@@ -24,4 +35,3 @@ Only relevant values (timestamp and CP/M) will be read into memory:
 # Import only relevant values, that's timestamp and CP/M
 for _, csv_raw_time, csv_raw_cpm, _ in csv:
 ```
-