diff --git a/README.md b/README.md
index b345c1d1..76535d19 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ pip install lightrag-hku
 ```
 
 ## Quick Start
+* [Video demo](https://www.youtube.com/watch?v=g21royNJ4fw) of running LightRAG locally.
 * All the code can be found in the `examples`.
 * Set OpenAI API key in environment if using OpenAI models: `export OPENAI_API_KEY="sk-...".`
 * Download the demo text "A Christmas Carol by Charles Dickens":
@@ -51,6 +52,7 @@ curl https://raw.githubusercontent.com/gusye1234/nano-graphrag/main/tests/mock_d
 Use the below Python snippet (in a script) to initialize LightRAG and perform queries:
 
 ```python
+import os
 from lightrag import LightRAG, QueryParam
 from lightrag.llm import gpt_4o_mini_complete, gpt_4o_complete
 
@@ -63,8 +65,6 @@ from lightrag.llm import gpt_4o_mini_complete, gpt_4o_complete
 WORKING_DIR = "./dickens"
 
 
-WORKING_DIR = "./dickens"
-
 if not os.path.exists(WORKING_DIR):
     os.mkdir(WORKING_DIR)