30 Days to A More Powerful Vocabulary By Wilfred Funk & Norman Lewis. Achieve a powerful, more effective, more successful vocabulary in just a month. All it takes is 15 minutes a day and this highly effective mini-course. Start boosting communication skills with a simple 12-minute quiz that highlights your current proficiency. Keep the pencil ready and go through the workbook which guides you in writing, saying, and using new words continually until they become second nature. Find out how to identify the etymology of a word, memorize odd words, use verbs and adjectives with remarkable power, choose a synonym, and create a personalized plan for vocabulary growth. It will increase your potential for success.