Well, what do you want to know about investment banking? Maybe you should ask here...
Aside from asking bankers, your best bet are likely to come from one of two sources: books or blogs. To learn more about i-banking, you could read the Business School textbook "Investment Banking" (published by Wiley Finance) which is a very practical explanation of how the i-banking industry is structured and what it involves. See if you can find a copy in a library someplace -- it's a rather expensive book. There also might be some used copies for sale at the major business schools in Boston. If you can't find that book, I would also suggest you try to find a copy of the Vault Career Guide to Investment Banking. I read it when I was first entering the finance field and it has some pretty clear explanations. Might be able to find a copy at your local major bookstore (e.g., B&N). There are also some pretty entertaining books set in the investment banking industry that might be helpful, including Liar's Poker, and Barbarians at the Gate.
Lastly, there's this: A day in the life of an investment banking associate from Business Week.</body></html>