Hi, am new new episerver cms - using version 11.

I have the following page structure in my procject:

+Root

   + Home

   + Landing Page

      + Sub Page ( of Landing Page )
      + Sub Page ( of Landing Page )

On my SubPage Type,  I have a 'Sections' property that i iterate through in the view. 

AllowedTypes(typeof(HeadingAndTextBlock))]
public virtual ContentArea Sections { get; set; }

The blocks have been added to the ContentArea section only.

My question(s) are:

• How do I create links to blocks in other pages of the site and managed them in the cms?
• On the Landing Page, how do I manage the content shown based on the blocks already created in the Sub Page(s) ContentArea property?

[Headig and Text Block]

[ContentType]
public class HeadingAndTextBlock : BlockData
{

[Display(Name = "Heading",
GroupName = SystemTabNames.Content)]
public virtual XhtmlString Heading { get; set; }


[Display(Name = "Sub Heading",
GroupName = SystemTabNames.Content)]
public virtual XhtmlString SubHeading { get; set; }


[Display(Name = "Bullet Points",
GroupName = SystemTabNames.Content)]
public virtual XhtmlString TextContent { get; set; }
}

[Page Type]

public class SubPage : GlobalBasePage
{
        
    [Display(Name = Global.Pages.SubPage.SUB_PAGE + " Sections")]
        [AllowedTypes(typeof(HeadingAndTextBlock))]
        public virtual ContentArea Sections { get; set; }
         
}

[ContentType(DisplayName = Global.Pages.LandingPage.LANDING, GroupName = SystemTabNames.Content)]
public class LandingPage : GlobalBasePage
{

[Display(Name = "Sub Page Links/References")]
[AllowedTypes(typeof(HeadingAndTextBlock), RestrictedTypes = new[] { typeof(HeadingAndTextBlock) })]
public virtual ContentReference Reference { get; set; }



/*  This is where im tring to link to other blocks in the sub page ^^   */

}