Adobe Campaign Standard

On Page 11 of the CCMO lab book I found a step that I could not figure out how to do.  The step is Exercise 2 > Part 3 > Step 2cI could not find away to assign a campaign to myself.  Also, I do not believe that the video for this chapter mentioned this step.  If I am wrong (and I probably am) can so...

Your client (or peer) Joe Marketer states that since there is no cost per message with Adobe Campaign, the best way to increase sales is to send every e-mail campaign to every contact in the data mart. Do you agree with him? Please argue for or against this approach, both from a business perspective...