diff --git a/lectures/lecture-05/1 - Command line, files, and processes.ipynb b/lectures/lecture-05/1 - Command line, files, and processes.ipynb
index 2281221..d28e064 100644
--- a/lectures/lecture-05/1 - Command line, files, and processes.ipynb	
+++ b/lectures/lecture-05/1 - Command line, files, and processes.ipynb	
@@ -90,7 +90,7 @@
     " - On macOS, go to \"Applications -> Utilities -> Terminal\" (German: \"Programme -> Dienstprogramme -> Terminal\")\n",
     " - On linux, start the \"Terminal\" program.\n",
     "\n",
-    "## Step 3 - your username and passoword\n",
+    "## Step 3 - your username and password\n",
     "\n",
     "Your username is your the lowercase version of your lastname (e.g. Cem Özdemir would have a username of `oezdemir`). Your password is your matriculation number followed by \"x\" (e.g. `12345678x`).\n",
     "\n",
@@ -407,9 +407,23 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c13ae6e1",
+   "id": "63c4b3bd-a196-474d-8c1f-ceed2a2f38aa",
    "metadata": {},
    "source": [
+    "# Markdown (`.md`) files\n",
+    "\n",
+    "Markdown files are another file type (like Python `.py` files) which can be edited as \"plain text\". In this case, it is used for writing documentation with things like **bold** words and [links](https://de.wikipedia.org/wiki/Hyperlink).\n",
+    "\n",
+    "It is very common to have a `README.md` file in directories with important information about its contents."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d95e5b12-4695-4476-8cdf-e7fcd579d0ce",
+   "metadata": {},
+   "source": [
+    "\n",
+    "\n",
     "# Reading and plotting data from the command line\n",
     "\n",
     "Copy the `iris.csv` file\n",
@@ -435,6 +449,24 @@
     "Now we can run this with: `python plot2.py iris.csv`"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "6e79bfc0-6af3-4168-9556-14fe3fa48bcf",
+   "metadata": {},
+   "source": [
+    "# Getting files from remote computer with `scp`\n",
+    "\n",
+    "The command `scp` is a sister to `ssh` and stands for \"secure copy\" and lets you download a file from a remote computer. The syntax is:\n",
+    "\n",
+    "    scp username:computer.example.com:filename.png .\n",
+    "\n",
+    "So, for the file generated above, I can download it from my laptop with:\n",
+    "\n",
+    "     scp straw@python-course.strawlab.org:plot2.png .\n",
+    "\n",
+    "On Mac, I can open a file from the command line with `open plot2.png`."
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "157597ea",