OK, first, I'll get the parts out of the way that is most open to mockage:
The guy who wrote the book gave it a very, very silly (and suspect) title:
How to make $1,000,000 in the Stock Market.
Seriously, the book title screams multi-level marketing and pyramid schemes.
That said, it gets worse. The first 1/2 of the book (I have an earlier version from the late 80s) is full of homespun storytelling that will leave you wondering if you've been ripped off.
You haven't been ripped off. If you make it past the "Golly Gee, It suddenly dawned on me" crap, you'll see a pretty decent plan for investing that will keep you from screwing yourself in either up or down markets.
Here's how it basically works: You put half of your money in what is called a 'high beta' stock. High beta is another word for very volitile which means "You could lose your money".
You put the other half in a very safe place (cash or super low-risk money market). If the high risk (high beta) stock goes up, you sell off a small portion of it and put the money in the cash. If the high risk (high beta) goes down, you buy a small portion.
The formula can be recreated in an excel spreadsheet and you can decide to 'adjust' as often as you wish, but you have to follow what the formula says.
There are a few 'safety' features in the formula that keeps you from getting greedy and they'll help you out in times where you might try to overthink the market.
I use it on a number of personal stocks and I've used it on my 401(k) and after about 8 years, I'm quite pleased. I lost money during the dot-com bust like everyone else, but I'm in a really good position now. For example:
I had $2000 to spend from an old IRA. I started the formula and bought Lucent stock at about $70 a share. Lucent stock currently trades at about $2.75 a share. I've been staring at a massive loss, but because the formula forced me to buy small amounts with the cash as the lucent stock went down, It only has to go back up to $6 a share for me to break even. I lost money and I'm still in the red on it, but I don't have to wait for the magical pixie fairy to boost lucent shares to $70 again.
There are a number of websites that have sprung up over the years that have forums and stuff and in fact, you can probably gain the formula itself from them. I'm more than happy to give my spreadsheet away for free if you are interested.
The only thing I would encourage you to do buy the book and make sure you understand how the formulas work so you understand what is going on.