Despite enjoying years in the world of agencies, from the small ones to the large ones, and those in-between, I can't tell you a quick or smart way to get in, since I don't really know any. Still. But if you need to get a bit more understanding of the ad world, and how life in an agency feels, and what they will most likely expect from you, I'd be happy to share some of the things I have noticed over the years. Perhaps it can be of help. Perhaps not. But it seems to me - and this qualifies as a tip I guess - that meeting with folks is the main thing. The truly great people of our industry might not have a job for you, but they will always be kind to help you onwards and point you in the right direction. So, meet with anybody you can persuade to see you. You will find it is rarely in vain.