If you want to create a link to your own content then you can use the Insert/edit link quicktag.

Create a link to your own content

• Type the text including the link
  e.g. To create a link to another website see?How to create a link
• Select the text for the link
  e.g. How to create a link
• Click on the Insert/Edit link quicktag
• Using the “Or link to existing content” find the content you want to link to, select it, then click on the Add Link button.

Example

To create a link to another website see?How to create a link

Screenshot