There are multiple ways of installing IPython. This page contains simplified installation instructions that should work for most users. Our official documentation containsmore detailed instructionsfor manual installation targeted at advanced users and developers.
If you are looking for installation documentation for the notebook and/or qtconsole, those are now part of Jupyter.
I already have Python
If you already have Python installed and are familiar with installing packages, you can get IPython with pip:
Welcome to IPython. Our full documentation is available on our website; if you downloaded a built source distribution the docs/source directory contains the plaintext version of these manuals. If you have Sphinx installed, you can build them by typing cd docs; make html for local browsing.