Here are some tips for you I hope you'll put these to action!

Don't just join any forum. Join those which are related to your site/blog/niche.

Write guest posts for blogs related to yours. Write good detailed articles and it''ll instantly earn you the spotlight. OR you can invite a famous blogger related to your site to write a guest post for you and ask them to direct their visitors to your site as well.

Launch some contests and post them on social networking sites.

Trade links with sites related yours.

Search engine optimize your site. There are lots of tutorials out there so just google