Page tabs are the labels that appear along the right edge of the page. They belong inside of sections. As you switch from section to section, you'll see all the page tabs pertaining to that section change to display the ones associated with the current section. This is where your notes and other content lives.

You can add a new page by clicking the New Page button that appears above the page tabs. If you prefer to use the keyboard, you can press <Ctrl + N> to create a new page. Subpages, (also known as grouped pages), are the page tabs that appear slightly indented, such as "Passwords" in this picture. This provides a way to further organize your pages.

The slight indentation indicates that they belong to a group of pages with the main page as its 'parent page'.

You can put any notes or content onto a subpage just like you can on a main page. To create a new subpage beneath the current one, simply click the small arrow next to the New Page button -> and select New Subpage.  You can also right-click any page and select New Subpage to create a new one immediately beneath it.  Or for you keyboard lovers out there, you can press <Ctrl + Shift + N>.  

One of the most compelling things about a page in OneNote is the versatility in which it can store your stuff. You can put just about every kind of content you can imagine on the page surface. It can handle, text, ink, drawings, pictures, audio, video, tables, documents and files of every kind. What's more, you don't have to do anything special for OneNote to handle any of these things. It just knows how to deal with them.

Content added to a page appears inside a container, known as an outline. The outline contains a handle along the top to show that you can grab it and move it around.

Each note inside the outline is known as an element.  Each element has a small grab handle that appears to the side to show that it can be repositioned inside the outline. You can also use the grab handle to drag content outside the outline if you desire.

The outline border and the element grab handle only appear if your mouse is hovering over them. To some people this is a nuisance, because these things are constantly flashing as your mouse moves across the page. If you want to reduce the amount the visual 'noise' on the page, you can hide the outline borders. To do this, click Tools -> Options -> Display -> remove the checkmark from 'Show note containers on pages'.

Tips:

• For left-handed users, the page tabs and scroll bar can be displayed along the left side instead of the right, click Tools -> Options -> Display -> place a checkmark in 'Page tabs appear on the left' and 'Vertical scroll bar appears on the left'.  This makes it easier to navigate your pages when using a pen.
• When a new page is created, the page tab's name appears as "Untitled Page". However, after you add a title to your page, the page tab adopts it as its new name. Even if you don't explicitly give it a title, the page tab name will adopt the first few words of any text or ink that it sees on the page.
• You can change a series of existing main pages into grouped pages by first selecting the range of pages, (this is done by holding down the Ctrl key while clicking on each additional page) -> then right-click the selection -> choose Group Pages. This causes the first page in the selected range to become the main page and all subsequent pages in the selected range to become subpages.
• You can also change all subpages within a group to be main pages by right-clicking the page group -> and selecting Ungroup Pages.
• You can adjust the properties of a page by right-clicking the page tab -> and pressing Page Setup. This is where you can specify the paper size, margins, rule lines, and more. You can even set your page surface to be a certain color.
• Pages come with a page title at the top. This is a special container that floats above the page surface and is reserved for text and ink only. All other content will be stored on the page surface. Immediately beneath the page title you will see the creation date and time. You can easily change the date and time by clicking on them. Once you do so a small control will appear to the side, click on it to select the desired date or time.
• You can also turn off the page title. To do so, right-click the page tab -> select Page Setup -> remove the checkmark from the 'Show page title' checkbox. Note, however, that doing so will permanently remove the page title and any content that appears in it. If you decide later to turn the title back on, just follow the same steps.
• If you are using a Tablet PC, you may have noticed that every time you create a new page it displays rule lines. To most people this serves as a guide to writing in a straight line. In addition, it gives you the experience of writing on a real paper notebook. Some people would prefer not to have rule lines on every new page. To disable this feature click Tools -> Options -> Display -> remove the checkmark from 'Create all new pages with rule lines'.