First, there’s this one old post dealing with the arguments made on Romans 14. Romans 14 is a central passage, explaining how grace really is supposed to work in a real church where real people struggle to agree on everything. It’s very practical and hence very important.
I’d add to it this post I call Romans taught backwards.
More complete discussions will be found in two on-line books and a lesson series designed for teaching in adult Bible classes:
If you only have patience for only one (I wouldn’t blame you), I’d start with Do We Teach Another Gospel?
I’ve tried to be fairly comprehensive in this brief series on the Regulative Principle. To avoid boring you to tears, I’ve referred back to old posts to make my points whenever possible. But if I’ve missed a proof text or an argument, let me know. I’ll post a response.