Weddings and parties are your best bet to start a book of your work.
The experience is great for any situation. You learn how to handle stress, timing, quick decision making, and people skills.
Go to a Model agency or make an add on craigslist, to take free pics of models. They can also get you in the fashion runway shows, so that you can get some good pics. Then you will meet more photographers and get rolling with that crowd.
remember you have to have a good eye, look at lots of photographer websites and books. The career your wanting is kinda like wanting to be a rockstar. Hard to get into and you need lots of money for good equipment. You also need to learn about Photoshop CS.
ARE YOU A ROCKSTAR?