You can select a component by first expanding the right toolbar and then hovering the mouse above the component you want to select and click the tab above the component. You can change a component to align (left side, right side, or freely).The content area, the menu component and the header image should all be draggable after clicking on the right toolbar. Try moving them around! You can save your changes with the save button on the left side of the toolbar (although it will be saving for you as you navigate around), but remember you must click the publish button before you changes will be published to your website.
To edit the layout you can choose a subsection by clicking a tab and using cursor keys to move around. You can right click anywhere in the document for clip-boarding functions. From the right click menu you can view the properties of the clicked component. You can also view the content object in that place, or you can insert a component into the current location. You can select a component or a section of a component use the editing tools to change the style of fonts inside that section. For example, if expand the right toolbar, you can choose the "name" section of page, the header of the contents area and you can change the font style and it will affect all of your pages that use this layout.