[John] Calvin is often identified with his account of predestination. Yet that appears in the third book of his Institutes, not the first.

I recommend Doug Sweeney's recent book [Jonathan] Edwards the Exegete (Oxford University Press, 2015), which is a terrific treatment of the way in which Edwards was steeped in the Bible, so that it shaped the whole of his thinking.

There are constraints on what counts as "Reformed." It's more than a name or a label. It's about belonging to a particular theological stream or tradition, which is shaped in important respects by particular thinkers and their work, particular arguments and ideas, a particular community (especially, particular church communities, denominations, and so on), particular liturgies or ways of worshipping and living out the Christian life, and particular confessions that inform the practices of these communities.

To my mind [ Jonathan Edwards] is an interesting figure because he is both a canonical Reformed thinker, and yet also someone that pushed the envelope in a number of key areas of theology.

That is the great contribution of Reformed thinking to the Christian church: theology for a life well-lived.

I think everyone who has an interest in Reformed theology, or just in Christian theology more generally, should read John Calvin Institutes.

Sometimes we can lose the wood for the trees. Some specific issues dealt with in the book [Saving Calvinism]: the scope of election (who is saved?); the nature of the atonement (do we have to hold to penal substitution if we're Reformed?); the scope of the atonement (for whom did Christ die?); whether we have to hold to some sort of theological determinism (God ordains all that comes to pass).