So I just started Photoshop and I'm using the pink lined smart guides to align all of my content. The problem is, they're only active when I drag a layer with my mouse, which is hard to do because I have a trackpad. Moving layers around with my keyboard allows me to be much more accurate, but smart guides seem to shut off when I do. Any solution to this would help.
As long as you have one layer selected (i.e. the layer you are moving), and have the Move Tool hover over another object on another layer, you can hold down CTRL while you use the arrow keys. If you are on a Mac, presumably Command would do the same.
In this example, I am moving the pentagon with the arrow keys, while the move tool is over the triangle.