If you’re looking to learn BH ads (FB, Google, etc.), most legit stuff isn’t public it’s in private groups or Telegram circles.
Check out AdLeaks (black section) – solid community, paid membership, sometimes drops BH methods.
Look for courses from iAmAttila, Franklin Hatchett, or Team Underground – not 100% BH, but they cover cloaking/funnels well.
Join Telegram/Discord groups that focus on cloaking, e-com greyhat, etc. That’s where the real sauce gets shared.
For 1-on-1, try finding reputable sellers on forums or referrals — vet carefully, lots of noise out there.