Welcome CRandall. Feeling resentment against what our parents did is hard to avoid. I and some others, had more resentment towards the non alcoholic parent for allowing the bad things to happen, let us live like that, learning dysfunctional habits. The only freedom I found was in forgiving. I know it sounds trite but it was my only option. Not because they deserved it, they didn't, but because I deserved to live in peace.
Look over the stickies posted above, there is a lot of interesting information there.