The most important thing to learn when welding is puddle control and heat penetration. You can go spend $2k on a machine and just spew wire all over the place with no idea what you’re doing. If you start with a small 110 flux machine, you can learn how to control a puddle, and for cheap. Then when you step up it’ll just get better and better, and easier too. There will always be a place in your garage for a cheap 110