diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -10,8 +10,8 @@ Teaching materials for the Applied Data Analysis (ADA) activity strand at the [D
 ## Syllabus 2023
 
 Convenors:
-- Matteo Romanello (University of Lausanne)
-- Nilo Pedrazzini (The Alan Turing Institute/University of Oxford)
+- [Matteo Romanello](https://orcid.org/0000-0002-7406-6286) (University of Lausanne)
+- [Nilo Pedrazzini](https://orcid.org/0000-0003-3757-2961) (The Alan Turing Institute/University of Oxford)
 
 
 | Day.session         | Topic           | Materials  |
@@ -20,16 +20,15 @@ Convenors:
 | 1.2      | Data carpentry | [slides](./slides/1.2%20Import.pdf) + [notebook](./notebooks/1.2%20Data%20Carpentry%20XML.ipynb) |
 | 1.3      | Python refresher | [notebook](./notebooks/1.3%20Skills%20Python.ipynb) |
 | 1.4      | The Python data analysis stack, pt. I  | [notebook](./notebooks/1.4%20Skills%20Pandas.ipynb) |
-| 2.1      | Tidy data pt. I-II  | [slides](./slides/2.2%20Tidy%20data.pdf) + [notebook](./notebooks/2.1%20Tidy%20data.ipynb) |
-| 2.2      | Tidy data pt. III | [slides](./slides/2.2%20Tidy%20data.pdf) + [notebook](./notebooks/2.2%20Wrangling.ipynb) |
+| 2.1      | Tidy data pt. I-II  | [slides](./slides/2.1%20Tidy%20data.pdf) + [notebook](./notebooks/2.1%20Tidy%20data.ipynb) |
+| 2.2      | Tidy data pt. III | [notebook](./notebooks/2.2%20Wrangling.ipynb) |
 | 2.3      | Data transformation with Pandas | [notebook](./notebooks/2.3%20Skills%2C%20Wrangling%20with%20Pandas.ipynb) |
-| 3.1      | Applied data analysis, pt. I: The basics  | [slides](./slides/3.2%20EDA.pdf) + [notebook](./notebooks/3.1%20Exploratory%20data%20analysis%20basics.ipynb) |
+| 3.1      | Applied data analysis, pt. I: The basics  | [slides](./slides/3.1%20EDA.pdf) + [notebook](./notebooks/3.1%20Exploratory%20data%20analysis%20basics.ipynb) |
 | 3.2      | Applied data analysis, pt. II: Advanced  | [notebook](./notebooks/3.2%20Exploratory%20data%20analysis%20and%20working%20with%20texts.ipynb) |
-| 4.1      | Applied data analysis, pt. III: Visualization  | [slides](./slides/4.2%20Visualization.pdf) + [notebook](./notebooks/4.1%20Visualize.ipynb) |
+| 4.1      | Applied data analysis, pt. III: Visualization  | [slides](./slides/4.1%20Visualization.pdf) + [notebook](./notebooks/4.1%20Visualize.ipynb) |
 | 4.2      | Applied data analysis, pt. IV: Mapping  | [From Melanie Walsh's *ICAP*](https://melaniewalsh.github.io/Intro-Cultural-Analytics/07-Mapping/00-Mapping.html) |
 | 5.1      | Social network analysis  | [From Melanie Walsh's *ICAP*](https://melaniewalsh.github.io/Intro-Cultural-Analytics/06-Network-Analysis/00-Network-Analysis.html) |
-| 5.2      | Communicating results and epilogue  | [slides](./slides/5.3%20Communication.pdf) |
-
+| 5.2      | Communicating results and epilogue  | [slides](./slides/5.2%20Communication.pdf) |
 
 
 ## Previous editions
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