(1) How do you use it?
(2) Could I use a keyboard and mouse?
Just need some input on the subject....

Sincerely, Rogue518
1. You put it on your face.
Here are the minimum system specs you'll need, straight from Frontier:
OS: Windows 7/8/10 64 bit
Processor: Intel Core i7-3770K Quad Core CPU or better / AMD FX 4350 Quad Core CPU or better
Memory: 16 GB RAM
Graphics: Nvidia GTX 980 with 4GB or better
Network: Broadband Internet Connection
Hard Drive: 8 GB available space
Also some min specs for Occulus RiftUnsurprisingly the system requirements for Elite Dangerous in VR take a big jump from what you need to run the game normally. Minimum RAM goes from 4 to 16 GB, while your graphics needs soar from a GeForce GTX 260 to a 980. As we've previously heard, the graphical demands of virtual reality are even greater than many gamers realize, especially for a game as complex as Elite Dangerous.
And the Steam VR specsNVIDIA GTX 970 / AMD 290 equivalent or greater
Intel i5-4590 equivalent or greater
8GB+ RAM
Windows 7 SP1 or newer
2x USB 3.0 ports
HDMI 1.3 video output supporting a 297MHz clock via a direct output architecture
If you're just looking for, or open to utilizing headtracking which honestly is super nice in and of itself in XWA, any flight sim game that is supported, and several others (ARMA series, DayZ, ect) Track IR is pretty easy on the system as well as the budget clocking in at 169.99 for the Trackclip Pro model (don't waste time on the others, the LED headset is better than jury rigging a work around or using the terrible hat-clip with reflective tape; the pro clip is more precise and it's only 35 bucks of value included in the Pro package price which nets you a slight discount on buying separately), and on the budget comparatively to a 600+ dollar headset, some seem to be selling in the 1k+ USD range.Here are the SteamVR System Requirements (Minimum)
CPU: Intel Core i5-4590/AMD FX 8350 equivalent or better
CPU SPEED: Info
RAM: 4 GB
OS: Windows 7 SP1, Windows 8.1 or later, Windows 10
VIDEO CARD: NVIDIA GeForce GTX 970, AMD Radeon R9 290 equivalent or better
PIXEL SHADER: 5.1
VERTEX SHADER: 5.1
DEDICATED VIDEO RAM: 4096 MB
SteamVR Recommended Requirements
CPU: Intel Core i5-4590/AMD FX 8350 equivalent or better
CPU SPEED: Info
RAM: 4 GB
OS: Windows 7 SP1, Windows 8.1 or later, Windows 10
VIDEO CARD: NVIDIA GeForce GTX 1060, AMD Radeon RX 480 equivalent or better
PIXEL SHADER: 5.1
VERTEX SHADER: 5.1
DEDICATED VIDEO RAM: 4096 MB
Granted, it's not VR but it's significantly cheaper and gets you the same functionality of head tracking of course without the shiny VR display.TrackIR 3 Series hardware or newer
Windows Vista or newer
60 megabytes of free hard disk space
And the was the key point ual002 …The pluses include not being blind to the real world, allowing you to see your keyboard and stick,
That's why I'm working on the Active Cockpit project