Reddit mentions of Infinite Reality: Avatars, Eternal Life, New Worlds, and the Dawn of the Virtual Revolution

(These are all (non-fiction) books. If you want research papers I can give you a bibliography of things you might find a few interesting things within.)

Virtual Reality by Howard Rheingold is a very good place to start for a founding in the history of VR (right back to the invention of the HMD by Ivan Sutherland in the 1960's) but was written before the current reignited interest in VR that Oculus has triggered;

http://www.amazon.co.uk/Virtual-Reality-Revolutionary-Computer-Generated-Worlds--And/dp/0671778978/ref=sr_1_1?ie=UTF8&qid=1396019470&sr=8-1&keywords=virtual+reality+howard

If you like Rheingold's writing style then The Virtual Community might be of interest to you. Not directly related to VR, but as VR becomes more mainstream (& especially with players such as Facebook expressing interest) it is only a matter of time until VR becomes a popular interface to virtual communities;

http://www.amazon.co.uk/gp/product/0262681218/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

If such sociological aspects of computers/VR interest you, then Sherry Turkle's books are fascinating;

http://www.amazon.co.uk/gp/product/0262701111/ref=oh_details_o09_s00_i00?ie=UTF8&psc=1
http://www.amazon.co.uk/gp/product/0684833484/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
http://www.amazon.co.uk/gp/product/0262012707/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

As somebody else already mentioned, Infinite Reality is a nice read, but is very 'light' on science/technical detail;

http://www.amazon.co.uk/gp/product/0061809500/ref=oh_details_o05_s00_i00?ie=UTF8&psc=1

If you like your cyberpunk fiction then Cyberspace: First Steps is great - it even has a foreword written by William Gibson;

http://www.amazon.co.uk/gp/product/0262521776/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1

For more of a brain-fuck read, take a look at The Cyborg Experiments;

http://www.amazon.co.uk/gp/product/082645903X/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

For basic virtual environment/virtual world background I can recommend these two (Richard Bartle is the guy who invented MUD1);

http://www.amazon.co.uk/gp/product/0131018167/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1
http://www.amazon.co.uk/gp/product/0631182144/ref=oh_details_o07_s00_i00?ie=UTF8&psc=1

And if by 'the VR experience' you mean 'immersion' or 'the sense of presence' then the first section of Virtual Space is a good start before diving into back issues of MIT Presence;

http://www.amazon.co.uk/Virtual-Space-Spatiality-Inhabited-Worlds/dp/1447111001/ref=sr_1_1?ie=UTF8&qid=1396019722&sr=8-1&keywords=virtual+space+spatiality

But the Rift was just a patent-expired take on the old VPL stuff, the full body suits owe Polhemus something of a debt, and the walking stations are pretty Virtuality. I think the Rift just showed that people's memories had faded in the mainstream.

Software like vrUI -

http://idav.ucdavis.edu/~okreylos/ResDev/Vrui/

and hardware like the immersive cinema headsets and every glove ever -

http://theglovesproject.com/data-gloves-overview/

kept VR alive but outside of the mainstream.

This book covered some of the reasearch circa 2011, headsets and CAVEs were still a thing then -

http://www.amazon.com/Infinite-Reality-Avatars-Eternal-Revolution/dp/0061809500/

And Second Life kept screen-based VR alive in a way that sadly didn't keep a hold on the public imagination.

What Oculus have done very effectively is to consumerise and brand the research. They're Apple, not PARC, and there's nothing wrong with that (apart from the non-free SDK ;-) ).