Snehil, what you are asking for is also called as scalping. You can google for scalping strategies, bunch of interesting ones out there.
Basically this involves you putting your orders at both bid and asks, and hence making the bid ask spread as your profit. Some of the things that you need to consider are
The contracts on which you decide to trade, the more liquid the contract the tighter the spread, hence smaller the opportunity. The more illiquid, bigger spreads but it will be tough to move in and out with big quantity. You will need to decide based on what type suits you better.
Single most important thing with such trades is risk management/discipline, Since you are playing for very small profits, you need to ensure that your losses are also limited to very small ones. A small mistake, could mean you giving on profits made over a month.
You will have hundreds of trades, so you need to know if you can handle such kind of emotional roller coaster.
As a bid-ask scalper, volatility is not good for you. So you need to ensure, there is way for your strategy to pick up when the volatility is going higher. In such times, it is best to stay away from scalping.