Andy Gemmill is the guy I would point you to when it comes to James. There is no one better, as far as I know of, when it comes to understanding this Letter.
You can find a complete overview of James from Andy Gemmill here:
You can find a shorter version of this on TruthForLife, here: https://www.truthforlife.org/resources/sermon/main-session-andy-gemmill/ and here: https://www.truthforlife.org/resources/sermon/james-his-desire-church/
You can also find a sermon series by Andy Gemmill to his church congregation, going through James 1-3, here:
Standing Before God, This We Are and No More 