There isn't anything that you can't learn after reading this book.It teaches you how to memorize precedents and laws if you want to be a lawyer,how to memorize names of drugs and what they do if you want to work in pharmacy,how to memorize stock symbols if you want to be a stockbroker,memorizing insurance premiums,memorizing computer codes if you work with computers,memorizing names and faces and the person's position, phone numbers and day and hour appointments if you're a sectetary, memorizing the prices for everything easily if you work in retail and so much more. This book is priceless and it's pity it's gone out of print.Buy it while you can.
If you read Harry Lorayne's other books on memory, you can apply it to business situations.
But I appreciated this book in that it particularly focuses on business situations in general and the memorizing of number information in particular.
Hopefully, this book will come back into print. I can see on this page that it's available from other sellers, and I would strongly suggest getting ahold of it if you feel you need it. You won't be disappointed.
One thing to remember -- these techniques require a lot of persistence, patience and sometimes plain old hard work. But it will be a good example of "working hard" so that eventually you work will be less like work! (Isn't THAT a doozy of a sentence?) :)
In other words, the effort you put in will be more than worth the effort, and will save you time and work in the long run.