Business & farm

Can you please clarify this statement?

"Startup costs can only be deducted in the year they were paid (for a cash basis business)."

I had some costs that were incurred in 2017 since I didn't actually start the business until January 2018.  From what I read, you deduct them in the year the business started, which in my case was 2018.  How do I treat these costs?  

Also, which Turbo Tax product or offering would be best to use in my situation.  I've never used it before.