I am brand new to websites and am learning, even HTML, as I go. I selected a basic theme that has a blue header bar with my words on it. I can change the color of the header. Can I superimpose a logo or image on it? Can I change the font of the words on the header? I am also really confused about sidebars. I want to add some photos in the sidebar position (I have added some withing my text). How can I select the position of my photos so they are on the sidebar position? Thanks for helping this novice.