diff --git a/README.rst b/README.rst
index f4bbf121..79f4755a 100644
--- a/README.rst
+++ b/README.rst
@@ -23,9 +23,24 @@ USAGE
     except ImportError:
         from PIL import Image
     import pytesseract
+
+    pytesseract.pytesseract.tesseract_cmd = '<full_path_to_your_tesseract_executable>'
+    # Include the above line, if you don't have tesseract executable in your PATH
+    # Example tesseract_cmd: 'C:\\Program Files (x86)\\Tesseract-OCR\\tesseract'
+
     print(pytesseract.image_to_string(Image.open('test.png')))
     print(pytesseract.image_to_string(Image.open('test-european.jpg'), lang='fra'))
 
+Add the following config, if you have tessdata error like: "Error opening data file..."
+
+.. code-block:: python
+
+    tessdata_dir_config = '--tessdata-dir "<replace_with_your_tessdata_dir_path>"'
+    # Example config: '--tessdata-dir "C:\\Program Files (x86)\\Tesseract-OCR\\tessdata"'
+    # It's important to add double quotes around the dir path.
+
+    pytesseract.image_to_string(image, lang='chi_sim', config=tessdata_dir_config)
+
 INSTALLATION
 ------------