Removing social links from sidebar and adjusting featured content image sizes

Hello, I am lost with 2 things on the Full frame site and couldn't see an answer anywhere. Am hoping this is not a repetitive question. My website is aru-fineartphotography.com 1. The sidebar (top right) - Is it possible to get rid of the social icons? Am pretty sure I added these but now can't figure out how. Would be great to get rid of these and have only the "search" text box aligned properly at the top right (in line with the Site header). 2. My Featured Content, some images are cropped and I am unaware how to resize them. If someone can guide me here, that would be truly appreciated. Much thanks in advance for any and all help, Arundhati