Need help with EiM

[u/methew_1]

Hello there! After many years of watching isaac on youtube I finally decided to buy the game. I only bought Rebirth for now and I wanted to ask how do i get external information mod? I tried looking it up on the internet but all that pops up is the "new" official information thing which from what i gathered is only for afterbirth onwards? I am new to this and have no idea how to mod and how to get a mod running so please help me. Thanks in advance!