Ask HN: Go beyond the programming aspects of my app Securing/Funding?

The other day i had a great idea, its no where to be found on the markets iOS or Android. So the other day i built it as a weekend hack i think that this app has great potential... I am young but wondering what the best way togo about raising money while preventing others from stealing the idea. Are trademarkets/copyright/patents needed to secure the idea? Any advice beyond programming the app is welcome... however i am mostly interested in finding out how to go about funding the idea. I would just need small amount of funding to try and scale this idea for x amount of months to test it and see how the public would use it, and if its something that would last long term... Thanks HN!