Adding pictures, images and graphics is a great way to add visual interest to your documents, blogs and discussions.
What you'll need to do to add them is to "upload" the file. (Dragging and dropping pictures is not ideal.)
Here are some screen captures to show you:
1) When you're creating the document, look for the picture icon. Click.
2) Select an image and upload it. (TIP: you'll need to find it easily on your computer, so I recommend naming the file so that you can easily recognize it and to store it in a place that you can easily find -- like your desktop or a folder you recognize.)
3) When it's in the document you can edit the size (drag the corners until you like a picture's size), and you can edit how it appears in relation to the text. I'd recommend you play with this feature. It's the best way to learn.
Have fun with this! It's a great design skill to have.