Fix Wordpress website

I have just been told by Worpress to update to the latest version. When I did this, it completely changed the layout of my website www.snouts-in-the-trough.com. Previously on the right-hand side (as you look at the website) I had all my books covers in a vertical line with my latest book THERE IS NO CLIMATE CRISIS at the top and larger than the older books. Under each book cover were two options - click to learn more and click to buy at Amazon.

Now there is just a list of my previous blogs which I don't want or need plus something called a 'blogroll' (I've no idea what that is and don't want it on my Home page).

I need someone to restore all the book covers vertically on thje right-hand side with the two options available under each book cover.

Please only reply if you live in the UK and English is your first language.