How to Know if Christian Author is Worth Reading

There's a ton of Christian literature available today, but how much of it is actually helpful? We can't possible read all the good material, and there's probably more bad than good on the market, which makes things even more complicated. But what does the Bible actually say about reading Christian books? While there's no way to deal with every example of doctrinal disagreement or scandals that discredit authors, there are some helpful ways to decide who to read and who to avoid. And to do tha...