A very interesting hobby. Something good about the time you pop that first reload you stuffed all by yourself. You can fashion your equipment based upon the volume of production you want to get into. Turret presses are more costly and allow you to crank out shells or cartridges by the hundreds or however much you have by way of components. I personally only have a couple single stage Lee presses and mostly do pistol cartridges. Do have a Hornady Lock & Load digital scale along with another small digital scale. I'm not into mass production, double check powder weights regularly and just use my reloading time to fill in snowy winter days.
Components, particularly primers, are getting scarce, at least around these parts. Oh yes, manuals are a must and there are always a few learning experiences. After jamming a .45 in my XD with one of my first reloads, I learned the importance of having a case length gage along with preferring a taper crimp or factory crimp die for cartridges in my semi-autos.
As stated, I don't get too involved with mass production and, perhaps, get anal about proper powder loading and cartridge quality. Safety is of primary importance. Have known of nice and expensive handguns being destroyed by someone's careless reloads.
Good luck and have fun.