How can I replace "Grav" with a logo?

Thanks for the great product. I've successfully installed Grav and need to upload my company logo to replace the text "Grav" at the top left section of the antimatter theme. Is there a simple guide I can follow? I've searched and gone over the source but I'm not experienced enough to figure out how to achieve this.

Look at these lines of Antimatter themes

Before editing a theme, it's best practice to inherit it first. You don't have to, especially if you're just fiddling for testing, but for a production site, it's best keep your customizations separate from the parent theme.

Just what I needed, thanks. Should any users need help with this, I modified the line highlighted by isuvar as follows:
---<h3><a href="{{ base_url == '' ? '/' : base_url }}"><img src="/path/to/images/logo.png" style="width:200px;height:50px;" alt="title";></a></h3>

Thanks Perlkönig :)