To add content, in your top menu go to Library, then Content Management, and then click "Upload Content."
In the form you are taken to, make sure that the Add/Edit field has "Add New" selected. Fill out the requisite fields. Make sure that the content you upload is SCORM compatible. In "Displayed Content Time", enter in an approximate completion time (e.g. how long it would, on average, take your participant to complete the content). Then select the framework that the content aligns to. If the content is remedial, check off the remedial box.
Click "Save Data", and then an upload box will appear. Click "Browse", pick out the file you wish to upload, and then click "Upload." Wait until the progress bar reaches 100% before clicking off the page.