I would object to the sentiment that you wouldn't know God very well but I agree scripture study outside of Mass is excellent and should be encouraged.
Too often, I go to mass, a child is fussy and I cannot hear the readings very well and on top of it the homilist spends his time chatting about his own life....not teaching about the readings. At Bible study I get a solid hour of scripture study, reading and explanations. Never have I had that at mass like I get in these classes. Occasionally, a priest comes close, but that is even rare.