How To Display Related Post In Post Content on Blogger

I have been struggling with this problem since 1-2 weeks now and I don't know what to do about it. Am trying to put a related post links inside paragraphs of my post content. I use a blogger blog and is given me turf time.
Can anyone help me out? I will appreciate it so much. I have attached a picture of a website running the kind of related post am talking about. 

Here is Tutorial