This might look like a typical "where do I start?" question and not worthy of a thread, but it isn't, so hear me out.

I've been trying to get a better handle on finance economics recently. I don't know if that is the exact term, but what I mean is that while I find micro/macroeconomic concepts to be fairly easy to understand (if I follow an introductory course or undergraduate-level textbook), I really struggle when it comes to understanding stocks, shares, bonds, securities, equities, futures, derivatives, etc. Basically, I will look up a term such as "quantitative easing" and I will find that I need to understand "bonds" to properly understand it. When I look up what bonds actually are, I find that I first need to understand what "securities" are. When I look up what securities are, I find that they are "financial instruments" or "financial assets". Then when I look up "financial instruments", apart from a brief and fairly abstract 2-3 lines saying what it is, the bulk of the explanation is composed of examples or types of instruments. In other words, it leads me back to "securities", which I don't yet understand.

I find this field to be really imprenetrable for this reason. I just can't seem to find the base level, of completely beginner explanations that start with the fundamental building blocks to then build up. To understand securities, I must understand financial instruments, and to understand financial instruments, I must understand securities, equities, etc. There is this kind of circular explanation problem. If I go to Wikipedia or Investopedia or some other basic website, each article is loaded with so much financial lingo that I find it impossible to understand, but then I look up articles explaining that lingo, and those articles are also crammed with lingo, often leading me back to where I started.

What is the best place to really begin, so that I can start from the ground up without being sent in full circles and ending up none the wiser? I can memorise certain chains as though they were code, i.e. a bond is a security is a financial instrument, but I still don't really know what I'm saying other than "A is B is C". Perhaps there is a better forum to ask this question; if so, please direct me to it.