You're probably looking for something more exciting, but they're really just a subset of xtianity, and really not even one of the particularly weird ones.
Standard fundie garbage: inerring bible, end of the world is soon, relentlessly push your shit on everyone, voluntourism, etc.
They do the "speaking in tongues" thing (half hysteria half faking) and I saw a few people have some god-seizure things but they're not sacrificing goats or anything. They're just intentionally overloading their emotional centers because they feel like it brings them closer to god.