diff --git a/download_gps.md b/download_gps.md
new file mode 100644
index 0000000..c27f2cf
--- /dev/null
+++ b/download_gps.md
@@ -0,0 +1,5 @@
+# Download GPS data
+
+This significantly differs from device to app. Goal has to be a .gpx file on your computer. It doesn't matter how you get it there from your phone, smartwatch or standalone GPS device.
+
+Proceed with [How to use rad-tag](howto_rad_tag).
diff --git a/preparation.md b/preparation.md
index 09628c7..3d07905 100644
--- a/preparation.md
+++ b/preparation.md
@@ -60,4 +60,6 @@ Setting device time to computer time
 New Date and Time from device is:2020-04-22 18:09:52
 ```
 
-[geigerlog_set_datetime]: images/geigerlog_set_datetime.png
\ No newline at end of file
+[geigerlog_set_datetime]: images/geigerlog_set_datetime.png
+
+Proceed with [Download radiation](download_rad) log.
\ No newline at end of file