I've been working as a graphic designer for the past six years but my current job requires me to jump into digital design here and there so I'm looking at brushing up my HTML and probably picking up CSS properly etc. I'm noticing lots of resources around to learn these languages, but as far as I'm concerned these are but a means to an end - a site's code can be clean and beautifully written and yet the design of the site could be useless from a visual communication or UX point of view IMO.

I know I'm never going to make a good developer as I drag my heels over learning to code, but my eyes light up as soon as you talk about usability, responsiveness and accessibility. Can anyone suggest sites/places I could check out that are understandable for a basic coder; resources that help me develop my design skills for the digital space at the same time as I improve my technical coding ability?