How to create Content Boxes

Hi,
I would like to create several CMS content boxes across my home page:
– Logo Box on top left
– Site Title Box next to it
– A summary box below the header menu
– A Information box at the lower end of the page
In short, I want to learn how to create a content box of any dimension, anywhere across the page.

Is any specific theme required for this, or we can do it even within the default themes.

I have no coding skills, and would require step by step guidance on how exactly to introduce shortcodes or widgetize (if that is the solution)

Many thanks for your support