A quick and dirty way would be add this rule in the style.css file of the theme:
h1.site-title {
display: none;
}
Yes, the above may work, but it’s very important that you not make changes to theme files — rather use a Child Theme or custom CSS plugin such as jetpack.
Of course child themes are best practice. You should learn about it as soon as possible.
However it could be a bit overkill for a simple change. FWIW, PressWork it’s a nice theme to make mods very easy.
Hiding with CSS: Problems and solutions
http://www.456bereastreet.com/archive/200905/hiding_with_css_problems_and_solutions/
Places It’s Tempting To Use Display: None; But Don’t
http://css-tricks.com/places-its-tempting-to-use-display-none-but-dont/
The right way to hide site’s title is how TwentyTwelve hides it when users set this option in header image settings, I would just copy the css part and apply it manually.
thanks for the links, accesibility it’s a very strong issue against using display-none; I’ll take it into my specifications to build new designs.