Goal: use Weka to learn a decision tree and visualize the tree.

1. Install Weka
2. Run Weka
3. Click on "Explorer"
4. Click on "Open File"
5. Navigate to the data directory that came with Weka. 
   On Windows, this is in the Weka install directory usually C:\Program Files (x86)\Weka
   On Mac, it is in the dmg image
6. Open the "Weather.arff" dataset. You should also examine the arff file using a text editor
7. Click on the "Classify" tab.
8. Click "Choose" and choose "Tree->J48"
9. Click on "Start"
10. In the lower left pane, right click on the run and select "Visualize Tree".