tikzit VS 3dpp

Take a look at TikZiT, which is a FOSS GUI for creating tikz files and also turning them into image files. I found it really useful for learning TikZ. Note that you don't need TikZiT to generate images, it's just an example of how it's done.

The best way to TikZ is to copy-paste from previous figures you've created.

The second best is to look for a similar figure on TeXample https://texample.net/tikz/examples/ or stack overflow https://tex.stackexchange.com/questions/tagged/tikz-pgf

The third best option is to use squared paper to draw by hand, then transfer hand-drawn stuff into TikZ code. It's slow as hell, but works well if you build up a collection of components you can copy-paste into other figs later.

There are also some GUI tools you could try: https://www.mathcha.io/ https://homepages.inf.ed.ac.uk/cheunen/freetikz/freetikz.htm... https://tikzit.github.io/ etc. (more links in this thread https://tex.stackexchange.com/questions/84890/does-there-exi... )

Its much much faster than writing the code, and the output is very clean. You can follow the instructions from the link. takes less than 30 min to set up and less than an hour to get comfortable with it. Its well worth the effort. I have used a configuration similar to the author's config from this page. And my work has been way faster this way.

The default 3d coordinates in TikZ are orthogonal. There doesn't seem to be any built in system for perspective. But there are a couple of projects out there that can generate a TikZ file from some other description, like https://github.com/danzat/3dpp