By day, I type at a computer; by night, I game at a computer. I have been using wireless keyboards at both home and work for some years now; however, I did have a sneaking admiration for the backlit keyboard which came with my spouse's current home computer.
This is a membrane-backed keyboard, not one with mechanical switches; however, the keys are very similar in shape & size to old-school typewriter keys, without requiring excessive force to depress. (I want to be able to feel my keypresses, of course, but I don't want to work as hard at it as I used to have to with electric typewriters -- which is why I don't particularly like mechanical gaming keyboards.) All of the keys you'd expect to find on a full-size keyboard are here, as well as some media-specific keys (I use volume control a lot), and a column of gaming-specific keys to the left of the main keyboard (G1-G6, presumably for gaming macros set up by the user). There is a detachable wrist rest; however, I found it to be too hard and unsupportive to justify the extra desk space it required, so I left it off after a while.
As a basic keyboard, this is plug & play via any USB port, and you can set up macros or change the backlighting without any additional software; however, the Corsair Utility Engine (CUE) software available from the manufacturer's website now supports the K55 gaming keyboard, and offers some additional customization options for this keyboard. (I tried the CUE software for a few hours, but didn't need gaming macros, and found flashing, color-changing backlighting to be too distracting, so I eventually uninstalled the CUE software.)
This is apparently a lower-end gaming keyboard; however, I found it quite adequate for my mixed-use (typing, web browsing and retro gaming) needs. If you (or someone in your life) are looking for a first gaming keyboard, give the Corsair K55 a try -- you may decide that you don't need to upgrade to a fancier keyboard after all! Recommended.