C.J. Mahaney has written some books I’ve found helpful.
The group of churches he leads, Sovereign Grace Ministries, have also produced many encouraging printed and musical resources.
Here he writes about a decision to step down from his leadership role for a season and the reason why:

Over the last few years some former pastors and leaders in Sovereign Grace have made charges against me and informed me about offenses they have with me as well as other leaders in Sovereign Grace. These charges are serious and they have been very grieving to read. These charges are not related to any immorality or financial impropriety, but this doesn’t minimize their serious nature, which include various expressions of pride, unentreatability, deceit, sinful judgment, and hypocrisy.
I believe God is kindly disciplining me through this. I believe I have by the grace of God perceived a degree of my sin, and I have been grieved by my sin and its effects on others.  I have had the opportunity to confess my sin to some of those affected in various ways by my sin. And I am so very grateful for their forgiveness.  But I want to perceive and confess any and all sin I have committed.  Although my experience of conviction has already started—and this is an evidence of God’s mercy—I’m sure there is more for me to perceive and acknowledge.  Even with the charges I disagree with it has been beneficial to examine my soul and ask for the observation of others.  And I am resolved to take responsibility for my sin and every way my leadership has been deficient, and this would include making any appropriate confessions, public or private.
Read the rest of his post here.

Josh Harris, successor to Mahaney’s pastorate comments here.
The Board of Sovereign Grace Ministries have also posted a statement.

Update: I hope you’ll understand if I don’t allow comments on this post.
I’ve received a steady stream of communication regarding concerns some people have had with SGM and its leader for some time, and if anyone is interested I’m sure more can be searched up.