Go to online college

The big names will have a network of companies that recruit their graduates/graduates working in big jobs/great companies. The only name I can provide is the Cleveland Institute of Art and I am not sure if they offer online programs ( go to google and put the school name in along with you tube and you can watch the award winning piece that introduces you to the school done by a great creative ad agency named Brokaw.).I do not know where you live but you could also try getting a list of the top marketing and advertising companies in your area and contact the Creative Directors to see if you can get an informational Interview to ask their advice on that.The Advertising Federation closest to you might be a good place to call to ask that question or to find names of people you can talk to.A portfolio is key to getting hired so you need to be at a school that will teach you the latest software and give you the opportunity to produce all different types of media that ad agencies work in including the internet.