diff --git a/to_remember.txt b/to_remember.txt
index 79e0c70..dc2f215 100644
--- a/to_remember.txt
+++ b/to_remember.txt
@@ -170,5 +170,14 @@
 -Geiger counter stuff: "https://sites.google.com/site/diygeigercounter/technical/gm-tubes-supported"
   Best: SBM-20 and the equivalent STS-5
 
-
 -Cool oscilloscope: Siglent SDS1202X-E 200MHz
+
+-Powertop usage:
+  To start powertop use "sudo powertop"
+  For the first calibration use "sudo powertop --calibrate", note that it takes a few minutes and during
+    that time the screen may go (it does) black for a few minutes too, just let it run.
+  To set everything to "good" do "sudo powertop --auto-tune",
+    to make the auto-tune start at boot refer to the Arch wiki or "how to create a sysemd service"
+  Note that in order to apply changes and stuff you have to leave it running for some time to let it
+    take its measures and stuff
+  Arch page: https://wiki.archlinux.org/index.php/powertop