While your Dashboard displays generalized details from all your campaigns, specifics for each individual campaign can be found under "view all campaigns" in the top right-hand corner of your dashboard. From the left sidebar, you can select a campaign to view the results of.
Here you can find:
the start and end date
budget
reach
number of impressions
amount of link clicks
cost per click
cost per one million impressions
frequency
a list of generated leads