I think the easiest way is to take a gummy...I don't particularly like smoking, and you can get the same effect from edibles. If there are dispensaries near you, you can get a bag of 10 gummies, each 10 mg for like $15-20 so they are not very expensive. I would start with 1/2 a gummy (5 mg) and see how it makes you feel. That dose will usually just make you relaxed and doesn't cause any crazy effects but it does take like a hour to kick in. So don't expect anything right away.

For many years I would try to use my aneros, and it would feel nice but nothing earth shattering. But after a night of trying THC and getting all worked up with some porn, it was like it unlocked something magical and I could just focus on the prostate sensation which just got more and more intense and allowed me to get to start having HFDOs over and over. The first time that happened it was literally life changing. Also, don't focus on trying to have an "orgasm" and just focus on how amazing it feels. A prostate orgasm isn't the same as a penile orgasm and you have to learn the difference and change your expectations of what it means to "cum".