New mac user here with a couple of questions. 1)I would like put some of my apps in launch pad (VLC and Handbrake), but I cannot drag and drop them there. Is there a way to do this? 2) How do I completely remove software? 3) How do I delete the files for software that I download and installed? If I put them in the trash it says they are in use. Thanks in advance. Love the mac, especially the gestures.