Transferring Photos from iPhoto to iCloud
Because iPhoto is to be discontinued and now iCloud is an option for storing photos, I would like to make room on Macbook by storing my iPhoto images on iCloud. My confusion comes in with the Photos app. Can I go directly into iCloud to store my photos or do I have to transfer them to Photos app first? I don't see an upload button. I would also like to store my videos there as well.
How do I do this?
MacBook Pro, OS X Yosemite (10.10.2)