There really isn't an easy way. It all depends on what you plan, how you plan, and how to execute your plans. Do you have a business plan? You always want to start with that before you do anything else.
If there was an easy way, more people would be doing startups and more people would be successful at it. It takes time and work, sometimes a bit of investing yourself depending on the industry.
The truth is, there is not quick and easy way like mentioned. It is skill, know how, and a bit of luck. People like to think they have a great idea that will go somewhere but very few have the initiative to get it off and running.
The easiest way is to get funding online. You can do this through websites like Kickstarter and GoFundMe. You will need to pitch your ideas and share them around social media. You'll have to hope they go somewhere.
Focus what you know and go where you are familiar with. If you are on Twitter or Facebook, start there. Ask questions, share ideas, post polls. Get your ideas out there and allow people to interact with them.