How do I manage photos with an external hard drive?
I have a MacBook Air 128GB and have photos and videos of our baby that have contributed to it filling up over the past year. How do I manage photos and videos with an external hard drive? I have older photos that I imported from a digital camera that I think I can remove, but I'd like to simply remove the album to my external HD.
MacBook Air (13-inch Mid 2013), OS X Yosemite (10.10.4)