This thread provided awesome info! Thank you so much!
Overall:
Step 1--decide what your different streams will be--buying stage, behavior, etc.; tailor your content around this
Step 2--decide what action is adding them to the nurture program itself; create a smart campaign either inside or outside of the program to add them to the engagement program
Step 3--determine the rules for moving in between streams; set those up in the program
Step 4--turn it on and see what happens!
Step 5--make more nurtures! (based on 'listening' behavior and get out of the batch and blast )