diff --git a/lectures/lecture5/notes/slides/lecture-5.md b/lectures/lecture5/notes/slides/lecture-5.md
new file mode 100644
index 0000000000000000000000000000000000000000..e3de2040f283ea214eae70d01c5d5747a184a3fa
--- /dev/null
+++ b/lectures/lecture5/notes/slides/lecture-5.md
@@ -0,0 +1,21 @@
+---
+marp: true
+size: 4:3
+paginate: true
+---
+<!-- https://marpit.marp.app/directives -->
+
+# Leksjon 5
+
+**Læringsutbytte**
+
+* 
+
+---
+
+
+```python
+...
+
+```
+
diff --git a/lectures/lectures.ipynb b/lectures/lectures.ipynb
index 281425f5984347ca0e54098c8c40670a21d273be..5ab3e8dd15bccd725bbbc1664eec223ec63b19ae 100644
--- a/lectures/lectures.ipynb
+++ b/lectures/lectures.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
@@ -63,11 +63,14 @@
        "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;<a target=\"_blank\" href=lecture2/notes/codes/sammenligning_av_strenger.ipynb>Sammenligning av strenger</a></blockquote>\n",
        "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;Løkker</summary>\n",
-       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;For-løkke</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;</blockquote>\n",
+       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Introduksjon til løkker</summary>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;lecture3/notes/codes/intro_til_lokker.ipynb</blockquote>\n",
        "</details>\n",
-       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;While-løkke</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;</blockquote>\n",
+       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Mer om løkker</summary>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;lecture3/notes/codes/mer_om_lokker.ipynb</blockquote>\n",
+       "</details>\n",
+       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Nøstede løkker</summary>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;lecture3/notes/codes/nostede_lokker.ipynb</blockquote>\n",
        "</details>\n",
        "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;Lab 3</summary>\n",
@@ -75,21 +78,16 @@
        "</details>\n",
        "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;Leksjon 4: Sammensatte datatyper (lister, tupler, set)</summary>\n",
-       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;Mer om løkker</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;<a target=\"_blank\" href=></a></blockquote>\n",
-       "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;Sammensatte datatyper</summary>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Lister</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;</blockquote>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;<a target=\"_blank\" href=lecture4/notes/codes/generelt_om_lister.ipynb>Generelt om lister</a></blockquote>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;<a target=\"_blank\" href=lecture4/notes/codes/lister_og_lokker.ipynb>Lister og løkker</a></blockquote>\n",
        "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Tupler</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;</blockquote>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;<a target=\"_blank\" href=lecture4/notes/codes/lister_og_tupler.ipynb>Generelt om tupler</a></blockquote>\n",
        "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Set</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;</blockquote>\n",
-       "</details>\n",
-       "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;&emsp;Dictionaries</summary>\n",
-       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;</blockquote>\n",
+       "<blockquote style=\"font-size:200%;cursor: pointer;padding: 10px;\">&emsp;&emsp;&emsp;&emsp;<a target=\"_blank\" href=lecture4/notes/codes/lister_og_set.ipynb>Generelt om set</a></blockquote>\n",
        "</details>\n",
        "</details>\n",
        "<details><summary style=\"font-size:200%;cursor: pointer;\">&emsp;&emsp;Lab 4</summary>\n",