This presentation is made to be viewed in this browser window. Instead of speaker notes, everything is on the slide. This should form the basis of your study notes, but not the entirety.
Social media interactions can be considered transactions. Web Cookies track usage as a series of transactions.
ATMs and most Point of Sale terminals are non web-based. Flight check-in are non web-based.
Buying concert tickets online? Real time. On line. Convenient!
Credit card transactions and batched. More in the presentation above.