Welcome to the wonderful, oft confusing and frustrating world of reloading!
My suggestion as a very first purchase is invest in a copy of The ABCs of Reloading (there are other How To texts around but this one seems to be the most popular https://www.amazon.com/ABCs-Reloading-Definitive-Novice-Expert/dp/1440213968 ). This text will show you the how to, explain why, show equipment and explain components. Reading, studying this text will easily get you started (and you can decide if reloading really is for you). Next would be a Lyman 50th Edition Reloading Handbook, that has a decent "how to" section along with load data for cast and jacketed bullets. As you can see from the previous answers everyone has their idea of what is needed to begin reloading, including kits. Fortunately I started reloading way pre web and wasn't confused by all the internet wisdom mixed in with the good hints, and I researched texts at the library. Instead of kits (which often include items I never use) I studied my needs and chose each tool after research and not by name or color. After you study the texts you will have an idea of what suits your need (and you are not locked into any one tool so ignore the "buy once, cry once" baloney. I have had 4 or 5 single stage presses, one turret press, and one Co-Ax. I have multiple makes of reloading dies for some calibers not to mention my 8 Lee Loaders and 1.46 metric tons of assorted reloading tools.).
Go slow. Double check everything. Most important, have fun...
My suggestion as a very first purchase is invest in a copy of The ABCs of Reloading (there are other How To texts around but this one seems to be the most popular https://www.amazon.com/ABCs-Reloading-Definitive-Novice-Expert/dp/1440213968 ). This text will show you the how to, explain why, show equipment and explain components. Reading, studying this text will easily get you started (and you can decide if reloading really is for you). Next would be a Lyman 50th Edition Reloading Handbook, that has a decent "how to" section along with load data for cast and jacketed bullets. As you can see from the previous answers everyone has their idea of what is needed to begin reloading, including kits. Fortunately I started reloading way pre web and wasn't confused by all the internet wisdom mixed in with the good hints, and I researched texts at the library. Instead of kits (which often include items I never use) I studied my needs and chose each tool after research and not by name or color. After you study the texts you will have an idea of what suits your need (and you are not locked into any one tool so ignore the "buy once, cry once" baloney. I have had 4 or 5 single stage presses, one turret press, and one Co-Ax. I have multiple makes of reloading dies for some calibers not to mention my 8 Lee Loaders and 1.46 metric tons of assorted reloading tools.).
Go slow. Double check everything. Most important, have fun...