docs updated

docs/source/usage.rst

@@ -3,13 +3,36 @@
 Quickstart
 ============
 
-To get started immediately, run :code:`interface_cmd.py` to activate a command line interface (CLI).
+Requirements
+-----------------
 
+* Python 3.12.0
+* Dependencies can be installed via :code:`pip install -r requirements.txt`
+
+
+Graphical User Interface
+-----------------------------
+
+Provides a graphical user interface in a web app.
+
+To run it locally:
+
+blocks::
+
+> streamlit run interface_gui.py
+
+.. image:: imgs/gui.gif
+   :target: _images/gui.gif
+
+Command Line - Interactive
+--------------------------------
+
+Provides an interactive prompt environment to set the simulation settings.
+
+To get started run :code:`interface_cmd.py` to activate a command line interface (CLI).
 
-Run the simulator
-------------
 * :code:`simulate` This command is used to run the simulation with the assigned settings.
-* Using just :code:`simulate` generates a default scenario (`defaults </_autosummary/pymgipsim.Settings.DefaultSettings.html>`_).
+* Using just :code:`simulate` generates a default scenario.
 * Predefined scenarios are available in the :code:`./Scenarios/` folder. To use one of them, use :code:`load -sn <scenario name>` and :code:`simulate`. 
 * Results are stored in the directory :code:`./SimulationResults/<results folder with datetime from simulation run time>`
 
@@ -18,4 +41,14 @@ Plot the results
 * :code:`plot` This command is used to generate plots from the simulation results.
 * :code:`plot -h` lists the arguments that can be used with :code:`plot <arguments>`
 * :code:`plot` with no arguments generates and saves all figures without displaying them.
-* :code:`plot --all` both generates and displays all figures.
+* :code:`plot --all` both generates and displays all figures.
+
+.. image:: imgs/cmd.gif
+   :target: _images/cmd.gif
+
+Command Line - single command
+----------------------------------
+Simulation settings are defined in a single command line.
+
+Start by running :code:`interface_cli.py [OPTIONS]`.
+