Grant writing and application process for a 501c3 business?

So I'm the office manager of a small start-up business. we have been 501c3 state certified for almost a year now but the owners have no idea how buckle down to get grants coming in. I'm trying to help them as much as i can but I'm can't do everything myself. We don't have enough money to hire an official grant writer is there anyone that can help me either learn how to write a successful grant myself or can do it for a reasonable price?

-Thank you in advance.