Modeling is a business, and like all businesses requires investment by you. These investments may be in time and effort or in money, but you cannot hope to be successful as a commercial model without making them. At a minimum, you will need to invest in a portfolio:
Pictures :
The single most important thing you need is good pictures, in the proper style, to represent yourself. You may find qualified photographers who will shoot you at reduced or no cost, but that is by no means assured. Generally, models must be prepared to spend several thousands at the beginning of their career, and to invest more on a regular basis to keep your “book” or “comp card” updated. Some models (typically young women) may find that they can get pictures done free or for greatly reduced rates, but all models should be prepared for the likelihood that they will have to pay for pictures.

Often what you get for free serves the needs of the photographer, not yours. It is relatively rare to find a good photographer who is willing to shoot commercially useful pictures for free. Karthik Srinivasan shoots commercially usefull pictures for upcoming and established models/actors. Visit karthiksrinivasan.in for more details about his work and profile.