How do I install files to be downloaded?

My site is det-enterprises.com and I am new to WP. I have some samples of my work as a writer that I would like to set up as free downloads for people to check out my writing style. How do I get them set up so they can be downloaded by my visitors? Thanks in advance for your help in this matter.

Eric.

PS. Please remember that I am completely new to WP and so I would need more of a step by step to get me through the process. Thanks.