I need help finishing off finishing pieces on Wordpress Template

General information for the website: Holiday Home website Description of requirements/features: We have a few final things i need to work out how to remove from wordpress - should be a very simple quick job! http://thebyrebarn.co.uk/ How can we change the top bit - it's still got the template place logo and contact details. can't find the element to change in the backend. On the home page, the three small rectangle image boxes (Make a reservation, view the rooms, latest promos) will not change, despite me changing in backend. Need to know why? How can we change the footer? How can we edit the background image – behind the banners? On the content pages, where can we decide which right hand side content is shown on each page? How can we change page layout that there's no right hand side - i have removed elements but still says: 'The sidebar you added has no widgets. Please add some from theWidgets Page' Extra notes: