Could you explain to me why the Command Line doesn't know these
commands and how can I install them?
This happens when Python executables are not added to PATH.
@xyres provided a nice link on how to do this.
I want to use pip, but before to install that, I need to execute the following command
using the downloaded get-pip.py program:
pip should be bundled with the official Python installer, so there should be no need to get it from other sources
