Add grid to homepage

Author: PhilReedData

TeSS_docs/index.md

@@ -2,6 +2,72 @@
 
 This documentation is intended to provide help and information on how to use a training registry created on the TeSS platform.
 
+
+::::{grid} 1 1 2 3
+:class-container: text-center
+:gutter: 3
+
+:::{grid-item-card}
+:link: overview/tess
+:link-type: doc
+:class-header: bg-light
+
+Overview
+^^^
+
+What is TeSS, definitions of terms.
+:::
+
+:::{grid-item-card}
+:link: accounts/user
+:link-type: doc
+:class-header: bg-light
+
+Account creation
+^^^
+
+Creating a user account, setting up a content provider.
+
+:::
+
+:::{grid-item-card}
+:link: spaces/intro-spaces
+:link-type: doc
+:class-header: bg-light
+
+Spaces
+^^^
+
+When to set up a TeSS space, how to credit other spaces' materials.
+
+:::
+
+:::{grid-item-card}
+:link: content/auto
+:link-type: doc
+:class-header: bg-light
+
+Content
+^^^
+
+Automatically or manually register events, materials or learning paths.
+:::
+
+:::{grid-item-card}
+:link: developers/code-data
+:link-type: doc
+:class-header: bg-light
+
+Developers
+^^^
+
+Configure an API or widget.
+:::
+
+
+::::
+
+
 ```{seealso} 
 - [mTeSS-X project website](https://elixirtess.github.io/mTeSS-X/) which includes [global instances of TeSS](https://elixirtess.github.io/mTeSS-X/global)
 - [Original documentation at ELIXIR TeSS](https://tess.elixir-europe.org/about)

TeSS_docs/overview/tess.md

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 **Training e-Support Service (TeSS)**
 
+
 TeSS is a platform that was developed to provide a one-stop shop for trainers and trainees to discover online information and content, including training materials, events and interactive tutorials. 
 For training providers, TeSS provides opportunities to promote training events and news, and to contribute to a growing catalogue of materials; 
 for trainers, the portal offers an environment for sharing materials and event information;