Hey guys I am very noob at technology and am having trouble understanding iCloud. First of all does someone have a good guide explaining exactly how it works? Aside from that, so I have my iPhone 4s and my iPad 2 syncd with my PC but I also have a macbook pro that has nothing to do with my devices. Somehow my calendar is getting syncd from my Macbook as well which is fine with me but I do not understand how it works. Is it because I have my Apple ID within all of these iCloud settings?