When I started loading many moons ago, I got a press, a set of dies, a shell holder, a scale, a powder funnel, case lube, a deburring tool and a manual. The press came with a priming arm. That along with some components got me started. It wasn't long until I wanted a powder measure. I made my own loading boards. I bought a lead pot, ladle, and one bullet mold for 44. I loaded for 40 years with that many tools plus some more die sets and shell holders for different calibers. Instead of calipers, I kept a factory round for comparison. Dark brass loads just fine. They don't need to be shiny. I trimmed rifle brass with a file. When you don't have loads of money to spend, you can get by and enjoy the hobby any way. A couple of my friends used to come over and load using my tools then later my sons loaded many rounds with these few tools.
I started loading when in High School. 1957. (Ya, I am older than dirt.)
I was approaching retirement age when I finally got a trimmer, tumbler, calipers, and hand priming tool. These things are nice, but not necessary as I know from much experience.
Lots of nice tools out there. Buy what you can afford. If the bug bites, you will never be done buying tools. (within budget) The hobby has let me do lots of shooting over the years that I would not have been able to afford otherwise. Enjoy!