[Theme Horse Support Team]

Hi christos-petritzis,

Thank you for purchasing NewsCard Theme. The Theme is Pretty easy to use. You can change most of settings from options of respective section on ‘Appearance > Customize’.
Like:

• For Navigation Font Size – Go to ‘Appearance > Customize > Typography > Font Size’ and change on ‘Main Navigation’.
• For removing all the Advertisement Banners on content section – Go to ‘Appearance > Customize > Widgets’ and Delete the ‘TH – Advertisement’ Widgets from the widget area ‘Front Page Content Section’ and Front Page Sidebar Section’.
• For removing all the Advertisement Banners on Header section – Go to ‘Appearance > Customize > Header’ and remove the Advertisement Image and URL.

Note: Please click the ‘Publish’ button on top on customizer after the changes made on customizer otherwise the site will still remain as before (without any new changes).

And could you please explain us a bit more that what you want to do with the Site Logo.
For more please go through the documentation here for the instruction about the Theme.

Lets us know if you have still some queries regarding the Theme.
Thanks