Problem with a Back up

Dear staff of altervista.
I made a back up (as suggested) and now
a) The style of the layout has changed (mainly in the lists)
b) More or less at the end of every page it appears some stuff non introduced by me (the following can be seen: Welcome, widgets edit move sidebar... with two images, one of them including "Guadagna con de tue idee... blog".

Can I restore the former layout?

How can I delete the stuff aforementioned in the previous item b?

Many thanks. Yours, Julio Benitez

Could you please post the address of the website?

Many thanks. i solved the problem by myself.