1) Post the link in related Facebook groups (But do not spam); 2) Post the link in Twitter... Don't forget to use some good hashtags to target even more people (This is STRONGLY recommended). 3) Post the link in Pinterest (Although it's an image-sharing website, Pinterest could be a great source of targetted traffic, so I also encourage you do this). 4) Create a Youtube video and promote a link in it. 5) Last, but NOT LEAST -> Create a good and eye-catching blog post... There are even A LOT more ways to promote, I just gave you some examples.
