I want to learn how to draw geometric figures using LaTeX, but I don't know where to start. The problem is that I don't know any accessible manuals or guides that is suitable for me. I learned LaTeX through 'The Not So Short Introduction to LaTeX' and other packages through short manuals, but what I have found is that pgf/tikz manual is something like 1100 page; I just couldn't simply read it from the very first to the last.
Since I'm a beginner, I wish I could draw basic geometric figures that come up in basic geometry texts such as Kiselev's geometry. I need a recommendation for a package that I need to use and any guides that I can start looking up. The guide shouldn't be too overwhelming, but introducing what I need right from the start. If there is a thorough guide, you can still recommend it for reference. The closest thing I can handle related to geometrical figures is a commutative diagram with tikzcd.
I wonder how an experienced LaTeX user started learning this subject!