diff --git a/README.md b/README.md
index 595e7a3..aad3e4c 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,17 @@ This project is a *thorough* introductory course
in programming with **[Python ](https://www.python.org/)**.
+### Table of Contents
+
+The materials are designed to resemble a book.
+They can be viewed in a web browser
+ either statically (i.e., read-only) on [nbviewer ](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/tree/develop/)
+ or interactively (i.e., code can be executed) on [Binder ](https://mybinder.org/v2/gh/webartifex/intro-to-python/develop?urlpath=lab).
+**Video** presentations on the content are available
+ either via the individual links to [YouTube ](https://www.youtube.com) below
+ or this [playlist ](https://www.youtube.com/playlist?list=PL-2JV1G3J10lQ2xokyQowcRJI5jjNfW7f).
+
+
### Objective
The **main goal** is to **prepare** students
diff --git a/static/link/to_mb.png b/static/link/to_mb.png
new file mode 100644
index 0000000..ae37d50
Binary files /dev/null and b/static/link/to_mb.png differ
diff --git a/static/link/to_nb.png b/static/link/to_nb.png
new file mode 100644
index 0000000..72a4285
Binary files /dev/null and b/static/link/to_nb.png differ
diff --git a/static/link/to_yt.png b/static/link/to_yt.png
new file mode 100644
index 0000000..b3955f6
Binary files /dev/null and b/static/link/to_yt.png differ