What is the best way of using Facebook to get targeted traffic

There's not really ONE best method, it's more of a 1, 2 sometimes even 1, 2, 3, 4 punch.

Engage within your industry. Whether it be groups or single personal pages and even business pages. This begins to put you in front of your target audience, which will make them look at your page. Inside your page you should have quality content and a way for them to reach your site.

The key is to make sure you stay targeted with your involvement. You can stray slightly away from it if it still makes sense. For example, Mommy Bloggers and Children's toys/clothes may work well together even though they are not directly connected.

As a general rule of thumb, you want to stay within your direct target market, only go outside if it REALLY makes sense.

You can also utilize ads which offer extreme targeting options to really hone in on your audience. But this is typically for people with an advertising budget.

The reason to have a facebook page is to help your posts go viral if your likers enjoy your content then they will like and share and there friends may see it and so on.

There's alot of facebook groups that have the 1 goal of reaching the maximum facebook friend limit of 5000 friends can you guess why? everytime you post depending on the frequency and quality your friends may like and share them but other than this there's an option for friends and friends of friends to see your post so think of it like this you have 5000 friends with 5000 friends that's an estimated reach of 250,000 people seeing your content although the 250,000 mark may be less it makes sense to do it

but targeted traffic i recommend facebook ads