diff --git a/Matlab refresher.ipynb b/Matlab refresher.ipynb
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--- a/Matlab refresher.ipynb	
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@@ -1,34 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Octave",
-   "language": "octave",
-   "name": "octave"
-  },
-  "language_info": {
-   "file_extension": ".m",
-   "help_links": [
-    {
-     "text": "MetaKernel Magics",
-     "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
-    }
-   ],
-   "mimetype": "text/x-octave",
-   "name": "octave",
-   "version": "0.19.14"
-  }
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diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -2,6 +2,12 @@
 
 ## Examples of Numerical Analysis in Dynamics
 
+### 0- Intro to Matlab and Numerical integration
+
+Matlab-and [Octave](https://www.gnu.org/software/octave/)-review of syntax and numerical integration techniques. In particular, Euler's method and the ode-integration routines ode23 and ode45, Runge-Kutta integration methods. 
+
+[Intro to Matlab and Numerical Integration](./intro_to_numerical_integration.ipynb)
+
 ### 1- Double Pendulum Kinematics
 
 [double_pendulum.m](./double_pendulum.m) has a script to plot the velocity over time and
diff --git a/Untitled.ipynb b/Untitled.ipynb
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-{
- "cells": [],
- "metadata": {},
- "nbformat": 4,
- "nbformat_minor": 2
-}