How do I go to the original article from the homepage?

Go to originial article flow:
1. On the homepage, click on the source href link.  This takes you to the original article.
How do I actually go to the author profile flow?

Onthe homepage, click on the author.  This takes you to the profile
of the person who wrote the article, NOT the profile of the user
currently logged in.
How do I go to the author page from the post page?

The flow is as follows:
On the post page, click on the author.  This takes you to the user profile page.
How do I add a list of comments to the post page?

Like this.

How do I show a time?
source: http://stackoverflow.com/questions/8084794/get-timestamp-from-datetime-value-using-activerecord