Getting started
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Here we demonstrate the capabilities of XACS platform for building a seamless user-customized computational workflow from setting up your system to calculations to the analysis of calculations and getting insights.

All exercises can be done online on XACS cloud computing without downloading and installing any of the software packages.
Please register and sign (see links in the right corner of the website) and then go to Computing page to perform simulations.
After you prepare input files and click on submit button, you can track the progress of the calculations in 'My computing' and download the output files.

To get started, our first example and exercises are for calculations and analysis of chemical bonding in a simple
ethane C\ :sub:`2`\ H\ :sub:`6`\  molecule, which consists of the following steps:

* :ref:`geometry optimization <example-c2h6-opt>`,
* :ref:`vibrational analysis and thermochemistry calculations<example-c2h6-freq>`,
* :ref:`energy decomposition analysis <example-eda-c2h6>`,
* :ref:`chemical bond analysis with valence bond theory <example-vb-c2h6>`.

.. include:: c2h6-opt.rst

.. include:: c2h6-freq.rst

.. include:: c2h6-eda.rst

.. include:: c2h6-vb.rst