To add to Metroknight's video, if you have already uploaded images to Roll20 you can find those images in the Art Library tab by typing in the tag for that image. You can then drag the image from the Art Library tab (in the sidebar) to the game board or to a Journal or Handout. Note: you cannot take images from your Art Library manager (the black star in the Art Library tab in the sidebar). You can tag images that way but you cannot drag and drop images from there to the table. - Gauss