diff --git a/README.Rmd b/README.Rmd
index 4f89acf..ee10455 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -19,7 +19,8 @@ knitr::opts_chunk$set(
 
 [![R-CMD-check](https://github.com/tscnlab/LightLogR/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/tscnlab/LightLogR/actions/workflows/R-CMD-check.yaml) [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.11562600.svg)](https://doi.org/10.5281/zenodo.11562600) [![CRAN status](https://www.r-pkg.org/badges/version/LightLogR)](https://CRAN.R-project.org/package=LightLogR)
 [![status](https://joss.theoj.org/papers/10.21105/joss.07601/status.svg)](https://joss.theoj.org/papers/10.21105/joss.07601)
-[![Codecov test coverage](https://codecov.io/gh/tscnlab/LightLogR/graph/badge.svg)](https://app.codecov.io/gh/tscnlab/LightLogR)
+<!-- [![Codecov test coverage](https://codecov.io/gh/tscnlab/LightLogR/graph/badge.svg)](https://app.codecov.io/gh/tscnlab/LightLogR) -->
+[![HiRSE Code Promo Badge](https://img.shields.io/badge/Promo-8db427?label=HiRSE&labelColor=005aa0&link=https%3A%2F%2Fgo.fzj.de%2FCodePromo)](https://go.fzj.de/CodePromo)
 <!-- badges: end -->
 
 Personalized luminous exposure data is progressively gaining importance in various sectors, including research, occupational affairs, and fitness tracking. Data are collected through a proliferating selection of wearable loggers and dosimeters, varying in size, shape, functionality, and output format. Despite or maybe because of numerous use cases, the field lacks a unified framework for collecting, validating, and analyzing the accumulated data. This issue increases the time and expertise necessary to handle such data and also compromises the FAIRness (Findability, Accessibility, Interoperability, Reusability) of the results, especially in meta-analyses.
diff --git a/README.md b/README.md
index 1033247..ece5c63 100644
--- a/README.md
+++ b/README.md
@@ -10,8 +10,9 @@
 [![CRAN
 status](https://www.r-pkg.org/badges/version/LightLogR)](https://CRAN.R-project.org/package=LightLogR)
 [![status](https://joss.theoj.org/papers/10.21105/joss.07601/status.svg)](https://joss.theoj.org/papers/10.21105/joss.07601)
-[![Codecov test
-coverage](https://codecov.io/gh/tscnlab/LightLogR/graph/badge.svg)](https://app.codecov.io/gh/tscnlab/LightLogR)
+<!-- [![Codecov test coverage](https://codecov.io/gh/tscnlab/LightLogR/graph/badge.svg)](https://app.codecov.io/gh/tscnlab/LightLogR) -->
+[![HiRSE Code Promo
+Badge](https://img.shields.io/badge/Promo-8db427?label=HiRSE&labelColor=005aa0&link=https%3A%2F%2Fgo.fzj.de%2FCodePromo)](https://go.fzj.de/CodePromo)
 <!-- badges: end -->
 
 Personalized luminous exposure data is progressively gaining importance
diff --git a/_pkgdown.yml b/_pkgdown.yml
index c50e942..7314e50 100644
--- a/_pkgdown.yml
+++ b/_pkgdown.yml
@@ -4,13 +4,19 @@ template:
 
 navbar:
   structure:
-    left:  [intro, reference, articles, newsletter, tutorials, news]
+    left:  [intro, reference, articles, newsletter, resources, news]
   components:
     newsletter:
       text: Newsletter
       menu:
       - text: July 2025
         href: Edition01.html
+    resources:
+      text: Resources
+      menu:
+      - text: Online course series 2025/26
+        href: pdf/Online_course_series_2025-26.pdf
+        target: "_blank"
 
 reference:
   - title: Import
diff --git a/pkgdown/assets/pdf/Online_course_series_2025-26.pdf b/pkgdown/assets/pdf/Online_course_series_2025-26.pdf
new file mode 100644
index 0000000..0341730
Binary files /dev/null and b/pkgdown/assets/pdf/Online_course_series_2025-26.pdf differ