test cyp, test E, test prop, sustanon? So confused

up there are so many different testosterone options I’ve been browsing through the approved sources on here and the choices are endless.
You’ve got test propionate, test enanthate, test cypionate, test blends, sustanon, etc etc.
how do you make a decision on what you should use if it’s your first time using steroids?
I’m 25 years old and I think I’m ready I’m 202 pounds and six foot one inches.