diff --git a/doc/erko_howto_tools.txt b/doc/erko_howto_tools.txt
index 316fad525c67fd545216814cd22c85645d28b169..27c70037dd01d049183ba7d95dbd91ae7f06203a 100755
--- a/doc/erko_howto_tools.txt
+++ b/doc/erko_howto_tools.txt
@@ -6,7 +6,7 @@
 * SVN
 * Confluence
 * Polarion
-* Latex
+* LaTeX
 * Markdown
 * Vi
 * Remote access
@@ -16,6 +16,7 @@
 * Linux
 * ICT diensten
 * Python
+* Jupyter
 * Zenodo DOI
 
 
@@ -388,7 +389,9 @@ for me it is an ok workaround,
 * Markdown
 *******************************************************************************
 
-See https://git.astron.nl/desp/args/Markdown/readme_markdown.txt
+https://git.astron.nl/desp/args/-/blob/master/Markdown/readme_markdown.txt
+
+Official guide: https://daringfireball.net/projects/markdown/syntax
 
 
 *******************************************************************************
@@ -726,6 +729,10 @@ Start --> Administration --> Synaptic package manager
 
 > sudo apt-get install lmodern # want log gaf aan dat lmodern.sty miste, nu wel pdf gegenereerd
 
+> sudo pip3 install jupyterlab
+# Add to .bashrc: export PATH="$HOME/.local/bin:$PATH"
+> jupyter-lab
+
 # Markdown
 > sudo pip3 install markdown  # zit al in Python3, maar kan alleen md --> html
 > sudo pip3 install mdutils   # https://pypi.org/project/mdutils/ # kan md genereren
@@ -792,6 +799,23 @@ numpy tutorial:
 https://lwn.net/SubscriberLink/847039/3016fa7278000b77/
 
 
+*******************************************************************************
+* Jupyter
+*******************************************************************************
+
+Installed in:
+ll /home/kooistra/.local/bin/
+
+jupyter tutorial
+https://www.dataquest.io/blog/jupyter-notebook-tutorial/
+https://www.dataquest.io/blog/advanced-jupyter-notebooks-tutorial/
+
+uses Markdown
+
+Startup with:
+> jupyter-lab  # lab is new,
+
+
 *******************************************************************************
 * Zenodo DOI
 *******************************************************************************