Choose The Right Niche: Niche selection is the first and the most important step of your affiliate marketing journey. But it's a long topic so I've covered it in this article.
The reason why it’s so profitable is due to smaller/lesser competition (since most sites are written in English) and using the native language makes it easier for them to build a rapport with the local audiences. Check out how to launch a multilingual WordPress site.

Action Item: Make a list of products that you use that you think your blog audience would benefit from using as well. Try to think of as many as you can.
Once you have built up your email list, you can start promoting offers via email. And when I say “built up,” I mean one person will do! Get used to sending emails to your readers, and make sure you create a relationship with them before you start to promote offers. You don’t want to come across like that person that only cares about making a sale! Be genuine, share tips and only promote when there is an honest offer that will fit your audience.