Spiny I commend you on asking about a generally known indicator. Obviously you asked for help to understand it better. I think you got a good answer from a very experienced blogger/investor. This forum should be used for more of this type of thing and don't take the fact that "you have a long way to go" to heart. Some people who spend alot of time blogging to show their stuff have as many unkknows and questions at a different level. So Spiny, keep asking questions for your needs and hopefully you will get the answer without being judged. I started off with "buy low;sell high". Then I started to ask questions.
A Sincere Good Luck SpinyDogman