You really need to learn more about dev in my opinion... but in saying this you can should do both.. work for someone and work on your project after hours.. since you don't have savings get some money in the bank before you go trying to start a business. Without experience and money there is a fairly small chance of success... working for others also gives you some perspective of best practices for development. I would strongly suggest getting a job and working part time... if it starts to get traction then go full time.