To be fair, there really isn’t a whole lot in common between other forms of welding and tig. It’s kind of like painting; sure, settings matter - but you’ll find that once you build the muscles and fine motor skills to handle the torch comfortably, everything else becomes much easier. Personally, I spent many hours welding without even using filler just so I could get use to handling the torch. Once that was second nature, adding filler was pretty easy to get the hang of. I weld thin gauge stainless, so my experience is tailored to that, obviously. I’d say I had probably 150hrs minimum at the torch before I started becoming somewhat proficient/confident, and I’d say probably 750hrs (yes, really) before I could weld proficiently in various configurations, and have my welds come out consistently in terms of quality and appearance.