How To Double Your Vocabulary
Despite advertising hype, no ONE book will double your vocabulary, but reading several vocabulary-building books can double your vocabulary. Different vocabulary-building books have different words and different explanations. If you don't learn a word from one book, you can learn it from another book.
Any vocabulary-building book will have many words, a fourth to half the book, that you already understand. You can always skip or skim the easy-to-you words.
Varied, incomplete word selection is another reason for using several books. Some books just take words used on past-standardized tests, neglecting other words. Other books, limit their words to words based on word roots, neglecting others. Often authors have thrown in personal favorite words, even if others rarely use the words. If you see a word in two or three books, it's generally a need-to-know word.
Cartoon/Mnemonic vocabulary books have their fans who like the mnemonic memory aids, which are useful before tests. If you don't like cartoons with mnemonic reminders, don't buy this book. The main weakness of Vocabulary Cartoons is with only one word and one cartoon per page, these books may only have a few hundred words and are expensive per word. Audio vocabulary books such as Elite Word Power, let you hearing each word pronounced correctly, helpful for improving speaking vocabulary.