Improve Logical Flow of Documentation

doc/index.rst

@@ -61,11 +61,12 @@
 Table of contents
 =================
 
 .. toctree::
    :maxdepth: 2
 
    user_guide/index
    file_specification/index
+   user_guide/supported_formats
    api/index
    contributing
    changes

doc/user_guide/index.rst

@@ -3,6 +3,39 @@
 User Guide
 ==========
 
+
+.. grid:: 1 3 3 3
+  :gutter: 2
+
+  .. grid-item-card::
+    :link: user_guide/installing
+    :link-type: doc
+
+    :octicon:`rocket;2em;sd-text-info` Getting Started
+    ^^^
+
+    New to rosettasciio or Python? The getting started guide provides an
+    introduction on basic usage of rosettasciio and how to install it.
+
+  .. grid-item-card::
+    :link: supported_formats/index
+    :link-type: doc
+
+    :octicon:`book;2em;sd-text-info` User Guide
+    ^^^
+
+    This provides a nice overview of the different files that can be read and written by rosettasciio.
+
+  .. grid-item-card::
+    :link: interoperability
+    :link-type: doc
+
+    :octicon:`code-square;2em;sd-text-info` Reference
+    ^^^
+
+    Documentation describing how to use rosettasciio with other libraries than HyperSpy.
+
+
 .. toctree::
    :maxdepth: 2