Change title font spacing

Hi there, I would like to change all the title fonts (titles of pages, posts and titles that appear on the home page) to have more space between each letter. Is this called 'letter spacing'? For instance: https://catchthemes.com/demo/helena/2015/11/29/inspire-motivate-people/ In the title, "Inspire & Motivate People" I would like the title font to have a little more space between each letter. I would like the same for all the title fonts. For example: https://catchthemes.com/demo/helena/ On the demo home page, title fonts like the one that says "Featured Content" and "Helena"...I would like to increase the letter spacing of all the titles. Thanks. I am working in a child theme of Helena Pro.