diff --git a/2020/readme.md b/2020/readme.md
index d48a7c6..843af9f 100644
--- a/2020/readme.md
+++ b/2020/readme.md
@@ -25,3 +25,8 @@ Day | Stars | Language
  23 | ★★ | Python
  24 | ★★ | Python
  25 | ★★ | Python
+
+Notes:
+I originally planned to solve AoC 2020 in C#, but somehow I ended up using Python for most of it!
+I found day 20 to be definitely the hardest/most time consuming.
+It took me only 5 minutes to do day 18, because I had the tokenizer and RPN solver already done and ready to go xD