Mitchell Wakefield, UX Researcher & Designer @StatusDigi has spent a great deal of time and effort to compile a list of completely free learning resources from top companies and universities.
I’ve had a look at the courses and I am very impressed. The courses on the list span a wide range of skills and topics within the UX discipline, from your bob standard Interaction Design, to Social Computing, Design Sprints and even the more academic theories on Affordances and Signifiers.
My favourite quote from the article:
“Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.” ― Henry Ford
If you’re new to UX, currently studying UX or just want to upskill in a certain area, I would highly recommend this list as a starting point.