Thankfully, keyboard shortcuts remain traditional to older versions. With the menus have been changed slightly with CC, it didn't take very long for us to get used to the new arrangements (which were actually minimal).
You might expect older PCs to get bogged down when opening larger images or doing extensive image manipulation. If you want to run Photoshop CC, you should expect to have a pretty modern PC running a good amount of RAM with a capable CPU and GPU. That isn't to say that it doesn't have a ton of features. Like with other versions of Adobe Photoshop, CC has a very streamlined and minimalist approach to a graphical user layout. From content-aware healing fills, smart selection tools and a number of tools for professional photographers, this version of Adobe Photoshop is probably the best yet. Photoshop CC has some excellent new features, building upon the decades of development the program has seen. The definitive photo editing application in the world, Adobe Photoshop CC is a continuation of the previous editions of Adobe's product, namely CS6, CS5, CS4 and so on. Photo editing suite to enhance your photos and designs with Photoshop with a complete set of tools including RAW processing and photo manipulation.