1. instruct someone as to the steps of a process
walk/take me through the process, provide a walk-through
Both variations of this phrasal verb mean the same thing: show or explain to someone how something works, or what steps to follow to make it work. You can insert a hyphen into 'walk through' to use it as a noun - i.e. a walk-through - but do not use take-through. You are more likely to hear this used in a professional context.