Hi, I bought what is only the second computer I have ever owned, and I am struggling to get caught up on technology. I do learn quickly though and will be putting a lot of work into this. My primary use will be photo editing. My secondary use will be to use a program called openCPN which is a newish boat navigation program. So first things first. I just bought a used retina macbook. It appears to be in excellent condition, the seller was a very nice professional graphic designer and there isn't a scratch on it. He even had the box and receipt. But still. I don't know him personally so here are my questions. First off, I am a mildly paranoid person, and one reason I went with Macintosh is for better security. Just since you never know with strangers, is there anything I need to do before I connect the new macbook online. Say, I was reading through a photo blogger's website while researching what macbook would fit my needs. Well, his had gotten stolen. He had put a program on there that let him spy on the thieves through the camera and remotely access his computer. I wouldn't want to be spied on, nor would I like someone to have remote access to my computer. I don't have any personal information on there now, so what, if anything, should I do to make sure the computer is clean of any malware and to make sure no one has remote access? What kind of anti virus/anti malware program(s) should I get, free or paid? Is there anything else I should check or do? I think it's just over a year old, is there any way I can check? If it were less than, I doubt it, but would consider apple care. What about any registration that I need to do? I don't think apple keeps a record of stolen computers, but is there anywhere that I should register it so if someday it gets lost or stolen I have an easier time recovering? Is there any of those find my mac programs or apps that I should have? Thanks. I'm sorry there are so many questions at once.