how to create grid view?

hi.
i want to create grid view for the category courses menu.
is it possible?
i undestand HTML and CSS and little PHP but what file must be modify or override?
my goal: simply show the course in grid view, not list or not under together.
tnx.

Hi.

Best way to do it is with a template override, so you don't need to modify Joomdle files. Here you can see it explained:
docs.joomla.org/How_to_override_the_outp...rom_the_Joomla!_core

Basically you copy default.php file to the right location, and modify it to display as you want.