Update _index.md Added some more orienting text to Resources

Feel free to modify;  just trying to fill in as much as possible before the EAB

content/resources/_index.md

@@ -5,5 +5,8 @@ type: docs
 
 TODO: [GH 74](https://github.com/ReproNim/repronim.org/issues/74)
 
-This section is dedicated to **how** to make use of the ReproNim ecosystem.
-Many of the materials here assume you are already familiar with [why neuroimaging should be reproducible](/about/why/).
+This section is dedicated to **how** to make use of the ReproNim ecosystem, comprising tools, training materials and tutorials on how to use ReproNim resources to improve the reproducibility of your neuroimaging studies.  
+
+If you are new to the concept of ReproNim's mission to increase reproducible practices in neuroimaging, we suggest you familiarize yourself with [why neuroimaging should be reproducible](/about/why/) and [ReproNim's Principles of Reproducible Neuroimaging](https://repronim.netlify.app/about/in-practice/). 
+
+If you are unfamiliar with ReproNim and its approach, we suggest you visit [Getting started with ReproNim](https://repronim.netlify.app/resources/getting-started/) for a general orientation to the website, along with a set of user stories that illustrate how ReproNim can address data and software management issues you may encounter in your current neuroimaging worklow