diff --git a/README.md b/README.md
index 3a89074..3d4db0a 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,6 @@ In this repository you can find following files:
 2. Jupyter notebook file: Decision_Tree_Classifier.ipynb that consists the code of our Decision Tree Algorithm as well as it's two implementations(two differents datasets)
 3. First dataset: iris_data.csv
 4. Second dataset: iphone_purchase_records.csv
+
+For understanding the concept and the working principle of the code please first read the pdf file.
+