I’m a bit surprised to not see more than one passing mention of a reloading manual. I highly recommend getting a couple of educational reloading manuals/books to learn about the basics. It is an overwhelming hobby and easy to spend lots of money on various trinkets. Understand the basics, get the basics, then add to your collection based on your preferences and desires.
Good luck, have fun, but be SAFE. Reloading is absolutely a dangerous hobby. Mistakes can have serious repercussions. I would even encourage finding a friend/coworker that is an experienced reloader and let them help you through your first couple sessions.