Hi Thomas,

Once the package is installed, then go to the developer section and right click Developer > Data types > Create. Give a name to the new data type and select "Markdown" from the dropdown list.

To convert the markdown format to html, import the namespace Our.Umbraco.Web.PropertyEditors.Markdown and use the helper MarkdownHtmlHelper.MarkdownToHtml. For example, this is the code I'm using in /Views/Umbraco/Homepage.cshtml

@inherits RenderViewPage
@using System.Web.Mvc.Html
@using Umbraco.Cms.Web;
@using Our.Umbraco.Web.PropertyEditors.Markdown;
@{
    Layout = "_DevDatasetLayout.cshtml";
    ViewBag.Title = DynamicModel.Name;
}
@section PageTitle
{
    @DynamicModel.Name
}

@MarkdownHtmlHelper.MarkdownToHtml(DynamicModel.BodyText.ToString())

Hope it helps

Thanks

Jorge