The most important thing you can do for yourself is to READ,... and then read some more to fully understand and comprehend what it is your going to be doing!
Take your time,.. and if there's something is in front of you you don't understand ASK questions from someone who's been doing it for a while. This is not a type of hobby you should be guessing at,... I started reloading back when I was 13 with my father. Started out with 12 ga. shotshells and grew to understand the principles involved. I graduated so to say to metallic reloading on my own using the same basic principles. I've been doing so for some 40+ years now.
I'm currently reloading for 8 different calibers,.. handgun & rifle alike. Each use the same principle but things vary based on what you will be reloading IE: crimp, no-crimp, etc. There's a vast amount of variables to consider when you reload so don't try "short-cutting" the steps involved.
Lyman produces a good introduction to re-loading in their manual which will explain a lot to you,.. it's well worth the $$ to pick one up and read and welcome to the world of reloading ammunition!