Google adwords. If you don't know what you're doing they'll send you bankrupt. It's a great way to spend money, but, without good knowledge of how to build campaigns that work, your results will be poor.
Google business page. A MUST! Equally as important as a website. Why? When you do a search for a product or service and there's a list of 3 at the top of page 1, that's Google business pages. It's a simple way to get your business on page 1 with less effort. Again, it must be done right.
Yelp, Manta, etc, etc. This is where it become geographic and demographic driven. Except maybe Yelp who I wouldn't pay a dime. Somehow they've wriggled out of every lawsuit brought against
