diff --git a/Lecture1.ipynb b/Lecture1.ipynb
index c849eab..f0e62a9 100644
--- a/Lecture1.ipynb
+++ b/Lecture1.ipynb
@@ -36,6 +36,9 @@
     "Once you have Conda installed on your system, you can create a new environment with:\n",
     "\n",
     "    conda create -n 580demo python=3.10 jupyter numpy scipy\n",
+    "\n",
+    "restart your terminal, and activate the environment with:\n",
+    "\n",
     "    conda activate 580demo\n",
     "\n",
     "At this point, you should be able to run `jupyter notebook` and open this notebook in your browser with it, or select the kernel `580demo` in VS Code (top-right corner) or other IDEs."