deleting photos

You can't-- it doesn't make sense to "delete from the library and not delete them from the folder"

Pictures aren't exactly "in" an album. When you put a picture into an album, its name is added to a list of pictures to display together when the album is clicked, kind of like a music playlist, but for pictures. So two albums can both have the same picture name in their lists, and that picture will show up when you click either album, but there's only one picture file-- it's just on multiple lists. And when you remove a picture from an album, its name remains in the lists of other albums, and the file still remains in your Library. An album is a list of pictures, not a place.

So albums give a specific view of your pictures. The picture of "Aunt Ethel at the Grand Canyon" can be in the "Aunt Ethel" album with other pictures of Aunt Ethel, and it can also be in the "Grand Canyon"  album with pictures of other people at the Grand Canyon. And it can be in a the "September 2015" album, and others, as well. Each album is pointing to a single file stored in the Photos Library, so having pictures in multiple albums takes up no more storage space. As you can imagine, this is very powerful in organizing pictures.

The Library View isn't really an "album"-- it's a special view provided by Apple to show all of the pictures in your Photos Library in order of the date they were taken. This can't be changed. This album always provides the same view so that, when something goes wrong or seems off, you (and we) can depend on it showing the same thing, and there's no chance that someone snuck in and changed the order or removed pictures.

Similarly, Recents is a special view provided by Apple to show all of the pictures in your Photos Library in order of the date they were added to the Library. You can't remove a picture from the Library View or the Recents view without deleting it entirely. They both show a view of all your pictures.

Richard.Taylor wrote:

You can't-- it doesn't make sense to "delete from the library and not delete them from the folder"

Pictures aren't exactly "in" an album. When you put a picture into an album, its name is added to a list of pictures to display together when the album is clicked, kind of like a music playlist, but for pictures. So two albums can both have the same picture name in their lists, and that picture will show up when you click either album, but there's only one picture file-- it's just on multiple lists. And when you remove a picture from an album, its name remains in the lists of other albums, and the file still remains in your Library. An album is a list of pictures, not a place.

So albums give a specific view of your pictures. The picture of "Aunt Ethel at the Grand Canyon" can be in the "Aunt Ethel" album with other pictures of Aunt Ethel, and it can also be in the "Grand Canyon"  album with pictures of other people at the Grand Canyon. And it can be in a the "September 2015" album, and others, as well. Each album is pointing to a single file stored in the Photos Library, so having pictures in multiple albums takes up no more storage space. As you can imagine, this is very powerful in organizing pictures.

The Library View isn't really an "album"-- it's a special view provided by Apple to show all of the pictures in your Photos Library in order of the date they were taken. This can't be changed. This album always provides the same view so that, when something goes wrong or seems off, you (and we) can depend on it showing the same thing, and there's no chance that someone snuck in and changed the order or removed pictures.

Similarly, Recents is a special view provided by Apple to show all of the pictures in your Photos Library in order of the date they were added to the Library. You can't remove a picture from the Library View or the Recents view without deleting it entirely. They both show a view of all your pictures.

You have to create photo sharing álbums to move your pictures there just make sure you have enough iCloud storage