diff --git a/cmlkit.ipynb b/cmlkit.ipynb
index beabb2ec5a8391191d5449515b3007e6fa3f8bdd..9bedea0872f746c46503fbce688fcd762e4bfad4 100644
--- a/cmlkit.ipynb
+++ b/cmlkit.ipynb
@@ -25,6 +25,8 @@
     "- Know a little bit about chemistry and/or physics,\n",
     "- Know roughly how kernel ridge regression works, and know a bit about machine learning in general.\n",
     "\n",
+    "For an introduction to kernel ridge regression, you can take a look at [this tutorial](https://analytics-toolkit.nomad-coe.eu/public/user-redirect/notebooks/tutorials/krr4mat.ipynb), which contains everything you need to know!\n",
+    "\n",
     "The contents of this tutorial will mostly be of interest for people researching the application of machine learning models to computational chemistry and computational condensed matter physics, and in particularly those interested in building computational experiments and toolkits in that domain.\n",
     "\n",
     "I'll use the following abbreviations and terms throughout:\n",