You might come across online advertisements posted by a “marketing guru”, who promises to make you “Millions in minutes”. To find out how, you have to buy his book online, which has the secret. Most likely, you will pay $20 for a book that will tell you to do exactly the same thing: post an ad online and wait for the cash to come.

How to avoid: don’t pay, just remember that the Marketing courses in universities take 2-3 years to complete, not 15 minutes. And remember, if all these “marketing gurus” made all these millions, how come they’re flogging their books and courses instead of relaxing on their yachts?