In this video Julieanne demonstrates ten of her favorite tips for working with layers in Photoshop including changing the background to a layer, renaming layers, creating new layers, duplicating layers, color coding layers, layer thumbnail options and more!
Ten Fundamental Tips for Working with Layers in Photoshop
I cannot locate the Radial Symmetry feature in the most recent Photoshop CC, It was a technology preview in older versions and I used it from time to time, Has it been discontinued?
With the brush tool selected, there is a butterfly icon in the options bar that will give you the paint symmetry options.