How do you embed a link?

I believe you're talking about tagging. Tagging is when you 'tag' someone/yourself in a post, and they get a notification telling them they were tagged/mentioned in the post. To tag this, you simple put a '@' if front of someone's username, for example @Signatured. You can now click on my name to pull up my profile information.

If you are asking how to embed any link into any text, it can be done my using the 'Link' feature. It looks like this (the irony). To use it, highlight with your mouse the text you want to link a url to, and click the 'link' button. You can then paste the url into the provided section, and hit 'insert.'

If you need anymore clarification, let me know.