1. You need money. Entry cost is around 15% of property price for downpayment, legal fee, etc.
2. You need good credit profile. Banks won't loan you if you have bad credit history.*
3. You need knowledge. a) know the market, don't buta-buta kena chop by sales agent; b) learn government's incentives to help first time house buyer; 3) learn how to manage your cash flow before you start your loan repayment.

*I agree building credit profile with credit card is important but my first mortgage loan was approved without credit card payment history.