There are three ways to share photos to all your family members i.e. using the "Family" album, creating a shared album or using the same iCloud account for all family members. You can easily share one iCloud Photo Library within a family members. You just need to use same primary iCloud account on both the devices.
To share one iCloud Photo Library within a family, you can use "Family Sharing" feature. It allows you to share photos with family members. To do so, you need to set up or turn ON "Family Sharing" feature and every family member has joined this group. The iCloud storage upgrades don't get shared through "Family Sharing". The other family members need to turn OFF other options such as Mail, Contacts, Calendars, Reminders and Notes on that shared account. And, then go to Mail, Contacts, Calendars in the "Settings" app on that members iOS device and "Internet Accounts" located under "System Preferences" on the member's Mac computer and add their iCloud account as a secondary account. This will give that member access to his own Mail, Contacts, Calendars, Reminders and Notes.
Quick Tip to Backup your Digital Photos
If you have treasured photographs, or you take photos of everything you like, you won't want to lose them. So, what is the best way to backup photos on an ongoing basis? In the back of your mind, you know you need to backup all of your photos. But where do you start? Here's how to backup your digital life: PicBackMan is the easiest and simplest way to keep your videos safely backed up in one or more online accounts. Simply download PicBackMan (it's free!), register your account, connect to your online store and tell PicBackMan where your videos are - PicBackMan does the rest, automatically. It bulk uploads all videos and keeps looking for new ones and uploads those too. You don't have to ever touch it.