diff --git a/_data/ntnu-courses.yml b/_data/ntnu-courses.yml
index 8fce2d0..e2c57e7 100644
--- a/_data/ntnu-courses.yml
+++ b/_data/ntnu-courses.yml
@@ -1,51 +1,77 @@
+# Våren 2021
+-
+  name: Våren 2021
+  href: 21v
+  courses:
+    - 
+      course: ttt4280
+      desc: Sensorer og instrumentering, våren 2021.
+      updated: 2021-01-11
+
 # Høsten 2020
-- 
-  course: tfe4152
-  desc: Design av integrerte kretser, høsten 2020.
-  updated: 2020-12-16
-  href: tfe4152/summary
-- 
-  course: ttt4120
-  desc: Digital signalbehandling, høsten 2020.
-  updated: 2020-12-06
-  href: ttt4120/summary
-- 
-  course: mfel3010
-  desc: Medisin for teknologi- og realfagsstudenter, høsten 2020.
-  updated: 2020-11-25
-  href: mfel3010/summary
-- 
-  course: tfe4146
-  desc: Halvlederkomponenter, høsten 2020.
-  updated: 2020-11-23
-  href: tfe4146/summary
+-
+  name: Høsten 2020
+  href: 20h
+  courses:
+    - 
+      course: tfe4152
+      desc: Design av integrerte kretser, høsten 2020.
+      updated: 2020-12-16
+      href: tfe4152/summary
+    - 
+      course: ttt4120
+      desc: Digital signalbehandling, høsten 2020.
+      updated: 2020-12-06
+      href: ttt4120/summary
+    - 
+      course: mfel3010
+      desc: Medisin for teknologi- og realfagsstudenter, høsten 2020.
+      updated: 2020-11-25
+      href: mfel3010/summary
+    - 
+      course: tfe4146
+      desc: Halvlederkomponenter, høsten 2020.
+      updated: 2020-11-23
+      href: tfe4146/summary
 
 # Våren 2020
-- 
-  course: ttt4270
-  desc: Elektronisk systemdesign, prosjekt, våren 2020.
-  updated: 2020-05-05
+-
+  name: Våren 2020
+  href: 20v
+  courses:
+    - 
+      course: ttt4270
+      desc: Elektronisk systemdesign, prosjekt, våren 2020.
+      updated: 2020-05-05
 
 # Høsten 2019
-- 
-  course: ttt4265
-  desc: Elektronisk systemdesign og -analyse II, høsten 2019.
-  updated: 2019-12-02
-- 
-  course: tdt4160
-  desc: Datamaskiner og digitalteknikk, høsten 2019.
-  updated: 2019-11-28
+-
+  name: Høsten 2019
+  href: 19h
+  courses:
+    - 
+      course: ttt4265
+      desc: Elektronisk systemdesign og -analyse II, høsten 2019.
+      updated: 2019-12-02
+    - 
+      course: tdt4160
+      desc: Datamaskiner og digitalteknikk, høsten 2019.
+      updated: 2019-11-28
 
 # Våren 2019
-- 
-  course: ttt4260
-  desc: Elektronisk systemdesign og -analyse I, våren 2019.
-  updated: 2019-05-05
-- 
-  course: tma4105
-  desc: Matematikk 2, våren 2019.
-  updated: 2019-05-21
-- 
-  course: tdt4102
-  desc: Prosedyre og objektorientert programmering, våren 2019.
-  updated: 2019-05-15
\ No newline at end of file
+-
+  name: Våren 2019
+  href: 19v
+  courses:
+    - 
+      course: ttt4260
+      desc: Elektronisk systemdesign og -analyse I, våren 2019.
+      updated: 2019-05-05
+    - 
+      course: tma4105
+      desc: Matematikk 2, våren 2019.
+      updated: 2019-05-21
+    - 
+      course: tdt4102
+      desc: Prosedyre og objektorientert programmering, våren 2019.
+      updated: 2019-05-15
\ No newline at end of file
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diff --git a/ntnu/ttt4120/summary/figures/impulseResponse.png b/ntnu/20h/ttt4120/summary/figures/impulseResponse.png
similarity index 100%
rename from ntnu/ttt4120/summary/figures/impulseResponse.png
rename to ntnu/20h/ttt4120/summary/figures/impulseResponse.png
diff --git a/ntnu/ttt4120/summary/figures/input-output-corr.png b/ntnu/20h/ttt4120/summary/figures/input-output-corr.png
similarity index 100%
rename from ntnu/ttt4120/summary/figures/input-output-corr.png
rename to ntnu/20h/ttt4120/summary/figures/input-output-corr.png
diff --git a/ntnu/ttt4120/summary/figures/linearTimeInvariant.png b/ntnu/20h/ttt4120/summary/figures/linearTimeInvariant.png
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rename from ntnu/ttt4120/summary/figures/linearTimeInvariant.png
rename to ntnu/20h/ttt4120/summary/figures/linearTimeInvariant.png
diff --git a/ntnu/ttt4120/summary/figures/longSeq.png b/ntnu/20h/ttt4120/summary/figures/longSeq.png
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rename from ntnu/ttt4120/summary/figures/longSeq.png
rename to ntnu/20h/ttt4120/summary/figures/longSeq.png
diff --git a/ntnu/ttt4120/summary/figures/z-transform.png b/ntnu/20h/ttt4120/summary/figures/z-transform.png
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rename from ntnu/ttt4120/summary/figures/z-transform.png
rename to ntnu/20h/ttt4120/summary/figures/z-transform.png
diff --git a/ntnu/ttt4120/summary/summary.md b/ntnu/20h/ttt4120/summary/summary.md
similarity index 100%
rename from ntnu/ttt4120/summary/summary.md
rename to ntnu/20h/ttt4120/summary/summary.md
diff --git a/ntnu/ttt4270/ttt4270.md b/ntnu/20v/ttt4270/ttt4270.md
similarity index 100%
rename from ntnu/ttt4270/ttt4270.md
rename to ntnu/20v/ttt4270/ttt4270.md
diff --git a/ntnu/ntnu.html b/ntnu/ntnu.html
index 73129ab..d3eb50a 100644
--- a/ntnu/ntnu.html
+++ b/ntnu/ntnu.html
@@ -4,13 +4,15 @@ title: "NTNU"
 description: "Alt som har med studier på NTNU å gjøre."
 ---
 
-{% assign courses = site.data.ntnu-courses | sort: 'update' %}
+{% for semester in site.data.ntnu-courses %}
+<h2>{{ semester.name }}</h2>
+{% assign courses = semester.courses | sort: 'update' %}
 <div class="row row-cols-1 row-cols-md-3">
 {% for course in courses %}
   <div class="col mb-4">
     <div class="card h-100">
       <div class="card-body">
-        <h5 class="card-title no-anchor" data-toc-skip><a href="{% if course.href %}{{ course.href }}{% else %}{{ course.course }}{% endif %}">{{ course.course | upcase }}</a></h5>
+        <h5 class="card-title no-anchor" data-toc-skip><a href="{{ semester.href }}{% if course.href %}{{ course.href }}{% else %}{{ course.course }}{% endif %}">{{ course.course | upcase }}</a></h5>
         <p class="card-text">{{ course.desc }}</p>
       </div>
       <div class="card-footer">
@@ -19,4 +21,5 @@ description: "Alt som har med studier på NTNU å gjøre."
     </div>
   </div>
 {% endfor %}
-</div>
\ No newline at end of file
+</div>
+{% endfor %}
\ No newline at end of file