what do i do

hey first time posting its my first day using modx over joomla
i am a cheerleader for north valley highschool i am developing this site for my team
i want to change a few things on one of the existing templates
first i want to replace the banner/logo with my own
and i want to change some background colors
i can edit the css/html i just need to know where
or if there is a easier way to do it plz tell me

CSS is the right approach. Just look at the link to the files on the filesystem and edit away.

Maybe I’m completely off... But, are you just looking for a way to edit the css in ModX? If so, then I would just download the css and edit it locally. Technically you can edit CSS files in ModX, but if you’re having trouble at this stage you might need more time to learn Modx. Modx doesn’t have a code editor built-in. You can edit the template directly in ModX, but it’s probably not as effective IMHO. But, if you want to try go to Resources > Templates and then choose the template you want to modify.