Importing a image into swift3D 4

Hey guys,
I just starting swift 3D, I made a 3D cube but now want to put pictures or text on each side of the cube. But cant even figure out how to import a pic. Are there certain images swift will alow for import?, and how do I make a keyframe, I know flash, but in swift I thought on the timeline I could just click insert keyframe to lengthen my animation or add new layers, but couldn’t find a panel for these options, does swift not work this way?. Thanks again for your help.