Update README.md

Update README file

Author: datejada

README.md

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-# data-analysis-with-python
-Basic course of data analysis (and a little bit more) using Python
+# Basic course of data analysis (and a little bit more) using Python.
+This repo is my humble contribution to put some useful information that I have gathered while working with Python and data analysis.
+
+# Section 1
+Introduction to Python: installation, programming structure, main packages, and Integrated Development Environment (IDE).
+
+# Section 2
+Exploratory Data Analysis (EDA)
+
+# Section 3
+Data visualization
+
+Sometimes it's tricky to choose the right graph to display your data. I like the guide in [data-to-viz](https://www.data-to-viz.com/)
+
+# Section 4
+Machine learning models
+
+# License
+Please see the [`LICENSE`](https://github.com/datejada/data-analysis-with-python/blob/master/LICENSE) file