I mainly hold from learning Torah. But I don't think doing this in a study hall or beit midrash or yeshiva makes much sense anymore.
One is supposed to learn Torah all the time. And there used to be places where you could go to learn. Like the Mirrer Yeshiva in Brooklyn. But no every place is fit because in some places the light of Torah does not enter into the learning. Even though the books are the same the light stays outside.
You can tell where the real Torah is by  signs. In any case, to be on the safe side I recommend learning Torah at home alone and never going near any religious synagogue.

In fact learning at that breslov place I sometimes feel a kind of "help from heaven"  סיעתא דשמיא in my learning. Like just today I walked in and I was already exhausted from running around, but i sat down with a Gemara and looked at a Maharam on a Tosphot in Sanhedrin 63 and it suddenly and instantaneously became clear to me what Tosphot is saying.

David, the fellow I learn with thinks that the best sign of a bad place is when then throw out people that are sincere.