Ballooning, like all PE, hell like all exercise in life, should be FUN.
Can’t stress that enough. It shouldn’t be homework, and there are no sure things here, just dive into it, experience it for yourself, see if you “feel” anything.
Basically the whole premise of ballooning is edging but in a different way. You’re not simply jerking off and holding in your cum, you’re DELICATELY massaging and touching your balls and the base of your shaft, while trying to really get into it, pucker up your anus, try to really focus your sexual “energy” into the routine.
Get your mind as horny as possible w/o porn. Btw, another good thing you can do is massage the tip of your penis.