To add a Facebook share button:
1. Follow this link.
2. Enter the URL you would like to share on Facebook. You can also select the button layout and size. When you're done – click Get Code.

3. Select IFrame and copy the code.

4. Paste the code anywhere on your website using the Embed code element.
Additional resources
Soundcloud – embed a track or a playlist
Elfsight – various website widgets
Jotfrom – contact forms
Involve.me – quizzes, surveys, calculators, forms
Infogram – infographics, online reports, interactive maps
freevisitorcounters.com, free-counters.org – tools for counting website visits/views