Although I don't have much idea about providing liquidity, I do have some ideas through which you could get new users at your website for beginning the trading.

• 0% fee is quite obvious as a new exchange shouldn't charge its users at the beginning stage of its development
• sign up bonus can be given to new users who register at your website and deposit an initial amount
• investment scheme like yobit investbox could be added to your website so that people could invest in it (but make sure the initial investment is less as people would not want to make a huge investment in a new website)
• Keep all your charges as low as possible as it will attract new users to your exchange
• you can also try doing partnership with investors or other exchanges