Jews, no matter how Orthodox, don't stone anybody today, and haven't for thousands of years. Do-it-yourself-Judaism is only a place to start. Eventually you are going to need a guide, a rabbi. Because it isn't all in the book. And, you cannot be sure you really understand the book. This is a way of life, not a science. You don't cut your own hair, do you? You can consult trained people. Chabad is useful.

There are REASONS for things. Did you know why one does not eat milk and meat together? Because one is life (milk- newborns) and the other is death (meat - carcass). Judaism is full of reasons and reasonableness. Even stoning people demotivates them so it never actually has to be done, in reality. We have achieved a lot. There must be something to all this therefore. It can't be empty posing and neurotic obsessing. Logic says that.