What are some best practices for a family sharing a single Apple ID? My family shares an apple ID, and I can't chose whose contacts I want to sync with when I set up Icloud. For example, I own a Mac and an iPhone. I want my content to only be synced between MY Mac and MY iPhone. Instead, everything including my contacts gets jumbled and duplicated together with my parents' pc and my families' iPhones. Because of this, I have three different instances of my sister in my contact book. My moms version my version and my other sisters version.

Does anyone have advice on how we should go about organizing out content and apple ID?
Here is what I do, where I share one appleid for purchases among 3 family members. Number one, only use the appleid for purchases just for purchases. then, each member should have a separate iCloud account with a unique appleid for mail, contacts, iCal, etc syncing.  Then, on all devices set the appleid for the store to the purchase id and on the individual devices set the iCloud id to the appleid for each individual separately. Works great for me.