What were your noob mistakes? Or continuing ones for that matter
Not realising I had two ships right off the bat (because of early purchase/kickstarter thing).
Not really getting the thermal load mechanic, kept crisping myself trying to fuel scoop, and not diving as soon as it's done when accelerating away.
Buying a Diamondback Explorer as soon as I could, racing off to the deep, landing, select the SRV - no SRV. Assumed that as my Sidewinder came with one, my DB would too.
Immediately pranging my Asp Explorer into the first planet I went to in it, because I didn't appreciate the difference in mass vs the crappy thrusters you get as default.
Leaving for a long journey then realising that after outfitting my ship I don't have enough cash to pay the insurance... made me tiptoe everywhere.
Going mining without limpets. I thought they came with the prospector controller.
Going mining without a collector controller. Cue hours of playing dip-and-grab.
Having pulse sensor and launch prospector controller on different fire groups, but the same fire switch. Accidentally fired off plenty of limited prospectors instead of activating the pulse.
I'll add more as I remember/commit them.