Update README.md

Author: Shaheer-khan-github

README.md

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 # Data-Analysis-with-Python
-This is a course of Data Analysis using Python.
+This is a course of Data Analysis using Python taught by Dr Muhammad Tahir.
+
+Chapter-1: Data Manipulation with pandas
+Chapter-2: Merging DataFrames with pandas
+Chapter-3: Introduction to Importing Data in Python
+Chapter-4: Intermediate Importing Data in Python
+Chapter-5: Cleaning Data in Python
+Chapter-6: Exploratory Data Analysis in Python
+
+All notebooks are prepared to run on google Colab. But you can run these books on pc also.
+
+# Mount google drive makes a connectivity of your G-drive (Google Drive) with Colab notebook so that you can access the file uploaded to google drive.
+# %cd is used to change the directory and used to give the path of where the file is located on google Drive. You can set your path according to your own.
+
+Comments are placed above or inline to understand what line is doing.