Dreaming of sipping whiskey on the rocks in the offices of Don Draper or Peggy Olson? You may not make the cast of Mad Men, but your advertising internship will introduce you to the modern brainiacs behind today’s most effective campaigns. Imagine—every “Just Do It” and “Have It Your Way” came out of an ad office after hours of deliberation. To become the ultimate advertising intern, you’ll need to be versatile with your talent and support clients with radically different brand strategies. Internships in advertising cross in and out of the marketing, PR, and business development departments. Your employer may use your formidable Excel skills to analyze the effectiveness of an online advertising campaign, or ask you to oversee the process of producing marketing collateral from the creative department’s initiatives. You’ll research your competitors and monitor your clients’ growth in a collective effort with other account associates. Whether you work in a global agency or join a company’s in-house team, you have the chance to direct the evolution of huge brands when you intern in advertising. By the time you leave your post for a full-time job, you’ll have developed keen sensibilities for customer care and phone etiquette, and a team spirit that will boost your career anywhere.