diff --git a/docs/source/index.rst b/docs/source/index.rst
index d09c2d3..e427724 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -9,11 +9,7 @@
 IMAS PDS Manual
 ===============
 
-The **Pulse Design Simulator** couples the codes used to design an ITER pulse --
-NICE for free-boundary equilibrium, TORAX and METIS for transport, the
-Waveform-Editor for targets, PCSSP for magnetic control -- into simulations that
-run as a single job, exchanging IMAS data through
-`MUSCLE3 <https://muscle3.readthedocs.io/en/latest/>`_.
+The **Pulse Design Simulator** couples multiple different codes used to design a pulse, exchanging IMAS data through `MUSCLE3 <https://muscle3.readthedocs.io/en/latest/>`_.
 
 Getting started
 ---------------
@@ -33,6 +29,103 @@ Getting started
 case contains and where its output goes, and :ref:`workflows` which couplings are
 available.
 
+Related documentation
+---------------------
+
+PDS couples different codes, so most of what you will
+need to read is maintained elsewhere. Below is an overview of what each tool does here, and where its
+own documentation and training live.
+
+MUSCLE3 and coupling
+^^^^^^^^^^^^^^^^^^^^
+
+.. list-table::
+   :header-rows: 1
+   :widths: 22 40 38
+
+   * - Module
+     - Role in PDS
+     - Documentation
+   * - ``IMAS-MUSCLE3``
+     - Collection of helper actors and for working with IMAS data in MUSCLE3 simulations.
+     - `Documentation <https://imas-muscle3.readthedocs.io/en/latest/>`__,
+       `Training <https://imas-muscle3.readthedocs.io/en/latest/training.html>`__
+   * - ``MUSCLE3``
+     - The coupling framework itself: it starts the actors, connects their ports and
+       carries the messages between them.
+     - `Documentation <https://muscle3.readthedocs.io/en/latest/>`__,
+       `Training <https://esciencecenter-digital-skills.github.io/lesson-model-coupling/index.html>`__
+   * - ``yMMSL``
+     - The file format a workflow is written in.
+     - `Documentation <https://ymmsl-python.readthedocs.io/en/latest/>`__
+   * - ``MUSCLE3 dashboard``
+     - Follows a running MUSCLE3 workflow live, and shows the recorder plots.
+     - `Repository <https://github.com/multiscale/muscle3-dashboard>`__
+   * - ``ymmsl2svg``
+     - Renders a MUSCLE3 workflow's coupling graph as SVG.
+     - `Repository <https://github.com/multiscale/ymmsl2svg>`__
+
+IMAS and data
+^^^^^^^^^^^^^
+
+.. list-table::
+   :header-rows: 1
+   :widths: 22 40 38
+
+   * - Module
+     - Role in PDS
+     - Documentation
+   * - ``IMAS Data Dictionary``
+     - The data model itself: which IDSs exist and what is in them.
+     - `Documentation <https://imas-data-dictionary.readthedocs.io/en/latest/>`__
+   * - ``IMAS-Python``
+     - Reading and writing the IMAS data that flows between the actors using Python.
+     - `Documentation <https://imas-python.readthedocs.io/en/latest/>`__,
+       `Training <https://imas-python.readthedocs.io/en/latest/courses/basic_user_training.html>`__
+   * - ``IMAS-Validator``
+     - Rule-based checks on IDS contents; PDS uses it for the operational limit checks.
+     - `Documentation <https://imas-validator.readthedocs.io/en/latest/index.html>`__,
+       `Training <https://imas-validator.readthedocs.io/en/latest/courses/basic_user_training.html>`__
+
+Physics codes and pulse design
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. list-table::
+   :header-rows: 1
+   :widths: 22 40 38
+
+   * - Module
+     - Role in PDS
+     - Documentation
+   * - ``NICE``
+     - Free-boundary equilibrium, in inverse, direct and evolutive (resistive
+       diffusion) mode.
+     - `Documentation <https://blfauger.gitlabpages.inria.fr/nice/>`__
+   * - ``TORAX``
+     - A core transport solver.
+     - `Documentation <https://torax.readthedocs.io/en/latest/>`__
+   * - ``TORAX-MUSCLE3``
+     - The MUSCLE3 actor wrapping TORAX, with its IMAS couplings.
+     - `Documentation <https://torax-muscle3.readthedocs.io/en/latest/>`__
+   * - ``METIS-IRFM``
+     - Fast integrated transport that does a whole pulse on its own.
+     - `Repository <https://git.iter.org/projects/SCEN/repos/metis>`__ (ITER internal),
+       `Documentation <https://github.com/IRFM/METIS/blob/main/doc/METIS_inputs_from_IMAS_IDSs.pdf>`__
+   * - ``Waveform-Editor``
+     - Turns a ``waveforms.yaml`` into the target waveforms the solvers are driven
+       with, and carries the machine description.
+     - `Documentation <https://waveform-editor.readthedocs.io/en/latest/>`__,
+       `Training <https://waveform-editor.readthedocs.io/en/latest/training/training.html>`__
+   * - ``PCS``
+     - The PCSSP magnetic controller (MATLAB/Simulink).
+     - `Repository <https://git.iter.org/projects/PCS/repos/pcs>`__ (ITER internal)
+   * - ``CHEASE``
+     - Fixed-boundary equilibrium.
+     - `Repository <https://gitlab.epfl.ch/spc/chease>`__
+
+New to all of this? The trainings are the fastest way in: start with the
+:ref:`PDS training <training/intro>`.
+
 .. toctree::
    :caption: Getting Started
    :maxdepth: 2
diff --git a/docs/source/installing.rst b/docs/source/installing.rst
index abddd80..f0b02a0 100644
--- a/docs/source/installing.rst
+++ b/docs/source/installing.rst
@@ -29,41 +29,6 @@ Loading the module
   module use /work/projects/pds/modules/all
   module load PDS
 
-The tool stack
---------------
-
-Only the first three are dependencies of ``PDS``. MUSCLE3 loads the rest when it starts
-the actor that needs them, which is why loading ``PDS`` is enough to run a workflow
-using any of them.
-
-.. list-table::
-   :header-rows: 1
-   :widths: 26 74
-
-   * - Module
-     - Role
-   * - ``IMAS-Python``
-     - Reading and writing IMAS data.
-   * - ``IMAS-MUSCLE3``
-     - The MUSCLE3 manager plus the generic actors (source, sink, recorder,
-       validator, ...).
-   * - ``ymmsl2svg``
-     - Renders a workflow's coupling graph as SVG.
-   * - ``NICE``
-     - Free-boundary equilibrium: inverse, direct and evolutive solvers.
-   * - ``TORAX-MUSCLE3``
-     - Core transport.
-   * - ``METIS-IRFM``
-     - Fast integrated transport, driven through MATLAB.
-   * - ``Waveform-Editor``
-     - Turns a ``waveforms.yaml`` into the target waveforms sent to the solvers.
-   * - ``PCS``
-     - The PCSSP magnetic controller, MATLAB/Simulink.
-   * - ``CHEASE``
-     - Fixed-boundary equilibrium.
-   * - ``IMAS-Validator``
-     - Rule-based checks on IDS contents.
-
 Verifying the install
 ---------------------