Request for different font style size weight and spacing

I have purchased acmeblogpro but for some reason don’t have access to that sub forum so I am posting here. The font size and readability that comes with this theme is a bit small and hard to read when there is a lot of text to read through. Is it possible to add the font style, weight, spacing, and size as seen in this theme? This is much more readable. Thank you.

http://mrwfh.com/wp-admin/customize.php?theme=emmet-lite&return=%2Fwp-admin%2Fthemes.php