Need advice on how to promote kickstarter campaign on social media.

Hi,

I have a product that I need start up capital and I am new to kickstarter and mass promotion on social media. I have my kickstarter page almost ready to go live in about a week or two but I know I need to promote my product BEFORE launching the kickstarter campaign. I have read that its a waist of time if you don't have followers already WAITING to back the project BEFORE lunching the campaign. So how would I promote my product without SPAMING or just simply copying and pasting to a bunch of Facebook groups and potentially getting banned for posting so much? What does a kickstarter promotion post look like? How would I even present it? Thanks.