Well, it is better to have some basic knowledge before learning any new concept. Like only when it comes to UI/UX design it is better to understand the basic terminology you can gain this fundamental knowledge from books, websites, and so on. If you are from a nontechnical background then also you can learn this tool for that I recommend UI UX certification course offered by Intellipaat where the courses are designed in such a way that anyone can learn it from the basic level to the advanced level.
Before that do watch this free tutorial video from Intellipaat if you’re interested in learning more about it