There are currently no widgets assigned to the left-sidebar, place some!
Once you add widgets to this sidebar, this default information will go away.
Widgets can be added by going to your dashboard (wp-admin) -> Appearance -> Widgets, drag a widget you want to see into one of the appropriate sidebars.
What if we like this one? Can we just repeat it….or at least the good parts?
You can just repeat it as long as you like! LOL
Tj