How to modify sidebar

Hi guys,

I’ve just tried the Contango theme, but I have some problems. I would like to be able to change the side bar to remove the calendar, change the information paragraph on the text.

I would also like to change the home page so that the articles are not displayed in full!

Here is the site: https://coutellerie-hello.fr

Is this possible?

Thank you for your help,

Daniel Parent