I purchased the 12" rMB and am now passing it along to my kid (after buying an iPad Pro). So basically I want to wipe the 12" rMB and bring in her data from a 6 year old 13" Macbook. 1. What is the best way to clean off my 12" rMB? 2. What is the best way to transfer her User Account from the 13" Macbook to the 12" rMB? Also, will my kid be able to update the OS X not being the original owner? Can I transfer the AppleCare to my kid?