Your question is not clear - what information are you looking for?

You need to create a RTE plug-in. Details can be found in this FAQ: Scott's Digital Community: Adobe Experience Manager FAQs and other Tips

If you want to know more about Dynamic Media - see: Working with Dynamic Media

You need to use Sling Models. You can find the answer in this AEM HELPX COMMUNITY Article: Adobe Experience Manager Help | Creating a HTL Repeating Data Set 6.4 Component that uses Sling Models Hope this helps...

Are you basing this on a SLING MODEL -where you know your collections are properly set?

This would require custom JAVASCRIPT code. I will see if there any examples that can help you.

This article shows you exactly how to interate through a collection (Multifield) using HTL:Adobe Experience Manager Help | Creating a HTL Repeating Data Set 6.4 Component that uses Sling Models

See Interface LiveCopy

I do not think you can use JS to get this type of information - you would need to use the Strongly types API: "The Adobe AEM Quickstart and Web Application." So to hook this API into an HTL component - you should use SLing Model - not JS HTL.

Lokesh covers this in this webinar: Scott's Digital Community: [Webinar | February ] Ask the AEM Community Expert: Best practice to query JCR data using Que…