I'd like to polish up on my UX knowledge. Some recommendations would be really appreciated.
Some years ago I've tried Design Lab. The good part is that you have a 1:1 mentor once a week to ask some question and help you through exercises. They have several courses such as UX research; Branding; UI design...
There's also the interaction design foundation, I don't have any experience on this platform but heard good things about it.
Here's a list I made for myself a few months ago. Some courses are free, some are not – and they all probably have a different focus. Can't comment on them, haven't tried them. Also; there are a few Master degrees in HCI or UX from several universities available online. You might want to look into those as well.
Interaction Design Foundation https://www.interaction-design.org/
Try design lab https://trydesignlab.com/courses/
UX DESIGN INSTITUTE https://www.uxdesigninstitute.com
General Assembly has some good remote courses. I've noticed GA is pretty popular with top-tier talent.
I've been looking into moving into UX from a front-end developer background. I just started this "learning path" on lynda.com. It's a collection of their UX courses on getting started in the field but they also have other UX courses like "UX Insights Weekly" and "Practical UX Weekly".