The “what happens if…” part and simply “experimenting” with various things, will teach you the most! Mostly because you can easily and quickly “tweak” them just to see “what happens if…”.
But I think that learning is best when you are doing simple examples. Of course, you can always say: “yea, I saw Łukasz did this, and I’m sure it will work, so let’s just do it”. So doing simple examples at the start is actually how I learn stuff. I won’t hide I’m a big fan of “check if works first” approach to FEA stuff. Preferably, one that you can easily solve by hand! Maybe even something that is more similar to things you usually solve in FEA? This way, you can check for yourself if this works. My advice would be, to try doing the same thing, with a different example anyway. And this is pretty obvious too! If you could easily calculate the outcome by hand… why do FEA in the first place?! I know that you most likely won’t have the luxury like that in your “actual” work. Mostly, because I will do the example where we can actually know the correct answer (I will calculate it later). I admit, that what I will do here, is a trick to some degree.
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