Apple's AppleID and iCloud and iTunes and ...
While one suggestion is to simple create a credit-card-less account and share that, a better option is to set up family sharing so that each person has their own AppleID.
- family sharing and kids https://support.apple.com/en-us/HT201084
- http://apple.stackexchange.com/questions/75429/do-i-need-to-set-up-individual-apple-ids-for-all-my-kids-ipads
- new devices and AppleIDs https://support.apple.com/en-au/HT204053