UX is the what, where, when, why, how a user (who) uses a product. From interviewing users to recording their observations and tracking patterns...to sketching lo-fi solutions, and quickly rendering hi-fi solutions... In this video they explain not only what UX Design is, but also why you should learn more about it, regardless of your job.
What is UX video (5 min) : https://www.youtube.com/watch?v=Ovj4hFxko7c
HI fidelity mock-up: https://invis.io/KNCGWPEC6#/242380143_Untitled-4_0000_1
This article is a great introduction to the concepts of cognitive fluency and visual information processing theory - all big words for the nuts n' bolts of UX. It discusses, in simple words, how simplifying your website can lead to more conversions - setting your users and your site up for success.
HUGE Inc. understands people, and looks ahead, investigating how range of emotion changes how people interact with UI.