A systematic approach is best, break it down into bitesize pieces otherwise you will become overwhelmed by it all. Remember the only way to "eat an elephant" is one bite at a time.
Pick a topic that interests you and type it into google.
Start with what you already know to be iffy, for instance you have already noticed how the org equates spirituality with blind obedience to them. You have rightly recognized this as false and that slaving for WT has nothing to do with, as you say, true "spirituality" or "getting to know" God or Jesus.
There are plenty of ex-jw websites and YTers. There is also plenty of info on cults and mind control techniques.