Your friends recommended two changes for the site:
Let's start by removing the description. Open
app/views/topics/index.html.erb and delete the line that looks
like this:
<td><%= topic.description %></td>
Also delete the line that looks like this:
<th>Description</th>
If you save and try to load it in the browser you should see that
the description no longer appears. Now make the title a link by
editing app/views/topics/index.html.erb (again) and replace this
line:
<td><%= topic.title %></td>
with this:
<td><%= link_to topic.title, topic %></td>
<td><%= topic.description %></td>
This line was getting the description using .description and just printing it out
<th>Description</th>
<th> stands for table header and everything between <th> and
</th> was being printed as a table header (bold). We removed it
since we removed the description and it would look funny to have the
header and the wrong thing below it.
<td><%= link_to topic.title, topic %></td>
Here's another use of link_to to create a link on the page. This
link_to creates a link using the text from the topic title and goes
to the topic#show page.