Select the Resources tool from the Tool Menu of your site.
Drag files from your computer and drop them in the Drop files to upload, or click here to browse box.
Click the Drop files to upload, or click here to browse button. This action will open your computer's file upload window where you can browse for and select the files that you want to upload.
Thumbnail images of files awaiting upload confirmation will display in the Drop files to upload, or click here to browse box.
Click the Continue button that's near the bottom of the page to confirm the file upload.