You can practice drawing views in this web page:

www.educacionplastica.net/3dcube_model/vistas_3d_2x2.html
I think it is a very educative method also funny :)!!!
This method also allows you to rotate the piece to better observe the views.
There are two systems
1. European:

2. American System:

We have done several exercises, representing the:

• Front view
• Left side view.
• Botton view