Here are 101 directories you can use to get one-way inbound links to your site. This is still, even today, the backbone of SEO link generation and a great way to build your site's credibility in search engines.
I suggest you submit your site to one directory per day over the next 101 days. You'll find it makes a difference when it comes to getting noticed by search engines.
And of course you can also see the other 66 ways to get links to your site.