You might want to consider the steps you'll be going through to learn to reload. For example, keep in mind that you are talking about loading both handgun and longgun. The procedures are similar for both cartridge types, but the workflows are generally quite different.
So, start out with reading an "overview" book such as The ABCs of Reloading.
1. Start with the straightwall pistol cartridge--from your post, 9mm.
(BTW, if you have a .45ACP pistol, I'd suggest you start there--it's a much-less-finicky round.)
2. After you have each of the (pistol) steps firmly in mind / on a written list, try doing each step--but in "single stage" fashion, NOT "progressive" style.
Work your way through the steps, and in doing so sort out the press setup.
3. For the moment, learn to set up the press and get it running reliably, while you familiarize yourself with learning what each stage of assembly is like.
As the others have mentioned, there are numerous items you can add to that initial purchase. But, at this stage in your education, learn those inidividual steps, then learn to integrate them, and start building some dummy rounds--i.e., without a primer or powder.
Above all, ask questions here on this forum; there is no such thing as a dumb question.
Jim H.