Slight blog change

I know my info says that this is a book blog, but I decided to change it to a book and movie blog.  I plan on reviewing books and movies that have already come out as well as things that are about to come out and things I want to read or watch.  Also if anyone knows how to change the name of your blog can you give me some pointers?   I am new to this and I don’t even know how to change the background.  Thanks!