diff --git a/README.md b/README.md
index 2a958e4d7eccbb0e7fc89c6ac3f573530f5ef1d7..ddd3509788581c6f9ec5e4eb3f5e181b57950702 100644
--- a/README.md
+++ b/README.md
@@ -9,4 +9,14 @@ this:
 ```
 make bayesian_statistics_introduction.tex
 make bayesian_statistics_introduction.pdf
-```
\ No newline at end of file
+```
+
+# Things to do
+
+- Introduce the bayesian reasonning with a discrete Head/Tail coin
+  (two possible coins H/T and H/H, one is picked at random, you
+  observe H;H;H;H;H;H;H;H, whats the likelihood of having either one
+  or the other ? how is it influenced by the prior ?)
+- Illustrate the bayesian probability/proportion estimation with the
+  water/land detection animation
+  https://twitter.com/rlmcelreath/status/1447516072236683265?t=Dr32Sxm3DTYbZn6DHllK1g&s=09