I am some what new to Mac. I need advice on moving, deleting, projects in my photos library. I have quite a lot of both videos and photos. I need to create and edit varied projects. I am totaly confused with projects, folders, albums whatever. Please advise. I am using the latest version of El Capitan 10.11.3. Please advise!!
MacBookPro, Mac OS X (10.5.7), Dell XPS 410
All of the items you've mentioned are virtual entities. They are just entries in the database. Folders can contain other folders and albums, but not photos.
Albums can contain photos and videos.
Projects are special entities within the library for the purpose of creating a slideshow, book, card or calendar.
This user tip will help explain how to use Album to help organize your photos: Moments in Photos are the New Events. It's primarily for users who have migrated their iPhoto library to Photos but might give you some insight into the library.
This user tip describes how to access your photos for use outside of the library: How to Access Files in iPhoto. Although written for iPhoto it also applies to Photos.
Editing all photos
