From the website’s “Campaigns” screen, under the tab labeled “Content Library”, click the “Upload New Content” button. When prompted, enter a name for the new piece of content in the field labeled “Name”. This name will help you organize and sort content later on, so make sure it’s descriptive and relevant. Then enter a short description for the piece of content. Click the button labeled “Browse”. You’ll be prompted to select a file to upload. Choose the appropriate file, and click the “open” button. Now click the button labeled “upload”. Once the content is successfully uploaded you can upload additional content for this campaign or end the upload session by clicking the “X” in the Upload Content window.