How to upload downloadable documents on Wordpress?

This question may sound silly and childish but still.. I am creating a blog where I will write articles and post some other stuff. There will be PDF's, eBooks, Office documents to download.

How do I create downloadable links like suppose if domain name is domain.com and document is test.pdf and the article is on http://ift.tt/2gRSyaw then I require something like this: http://ift.tt/2fWn7HB where the person can read or download.

Any idea how to do this?

It is a self hosted Wordpress Blog.