Being targeted to begginer and intermediate Smalltalkers it has its value even for experts to recall. Would recommend to everyone who has anything to do with Smalltalk or wants to start with it. This one together with Kent Beck's Best Smalltalk Patterns are the books I am returning frequently to. If there's a Smalltalk feature that I haven't dealt with in some time then I'll take a peek at it here before I do anything else. Great value for the money.