So, this is what you need to do.
On the right hand side of your Profile, you will see a follow me bar, shown below
As you can see this lets you list the most popular social networks, plus any other networks that you have a presence on.
By default, you will see Instagram, Facebook and Twitter Pre Populated.
Now if you are slightly newer and don't have as many networks as this don't worry, you can always add them as you go along.
What you need to do with this sidebar, once you are ready to promote the Wealthy Affiliate Link or Your Own blog, is simply choose the Platform of your choice.
How you do this is on the next page