ok open up your internet and search for the Voidswrath launcher.click this link to go there now
go to the bottom of the page and choose your installation.
use your minecraft details to log in, the lowercase letters show as capitals so don't worry if it looks wrong.
then go to mods on the tab 1 in from the top left, scroll down till it shows crazy craft 3.---- and install then play. once it loads just enter the server details in the , well thats it. see you out there.