Michael Spencer (aka iMonk) has a nice little series over at internetmonk.com entitled “Postcards to a Young Theologian”. There’s some good stuff there for theologians of all ages. It’s primarily aimed at Calvinists, but there’s stuff there for everybody.
Part 1: Introduction.
Part 2: Be suspicious of guilt that comes from crossing the perceived boundaries of a group.
Part 3: Be honest: Does the logic of a group eventually conclude that other Christians are, in fact, not true believers at all?
Worth the time to read.

[...] Parts 1 - 3. [...]