While I'm fairly interested in tech things, I don't really have a tech background. Could you give me an example of topics with few resources online? The majorit

While I'm fairly interested in tech things, I don't really have a tech background. Could you give me an example of topics with few resources online? The majority of subjects I can think of have good resources online, the only issue is navigating them as a beginner (which can be helped by finding some sort of mentor). There are sites like MIT courseware that are completely free and allow online learning. Though of course, there are signaling benefits to online degrees.