Activating reveal.js in WordPress 4.2.2

Question

I want to use reveal.js in the WordPress theme of my website, which uses WordPress 4.2.2. I followed the instructions by alleyinteractive here.

1. I downloaded reveal.js for WordPress.
2. I extracted it into public_html/wp-content/themes/revealjs-wp-theme-master.
3. I downloaded Fieldmanager plugin and extracted the zip file into public_html/wp-content/plugins/wordpress-fieldmanager-1.0.0-beta.2.
4. I can see the theme in wp-admin as shown below:

However, I am afraid to activate the theme as I may lose the content of my website. Could someone tell me how I can create reveal.js presentation along with my current WordPress theme? What happens if I activate reveal.js theme? I learned how to make a presentation by reveal.js on my local computer but I don't know how I can have it on my website.

Answer 1

As it said in here:

WordPress users who want to create and host their own slides now have the option to use the Reveal.js theme for WordPress. It installs just like any other theme and requires the addition of the Fieldmanager plugin. The theme takes over the entire website so it should only be used on a site dedicated to displaying presentation slides.