Charism School

At the Big Herod's church someone left a brochure about Charism School. Obviously somebody from the parish had gone to one of these seminars where they teach you and train you in the charismatic gifts. So it was advertised in the brochure at least. Can one really go to school for something like this? I thought these gifts were gratuitous. I think one can learn to better understand them and then it is really up to God.