Look for more books in the series
Learn Seven Things in Seven Weeks.
Just as each new spoken language can make you smarter and increase your options, each programming language increases your mental tool kit, adding new abstractions you can throw at each new problem. Knowledge is power. The Seven in Seven series builds on that power across many different dimensions. Each chapter in each book walks you through some nontrivial problem with each language, or database, or web server. These books take commitment to read, but their impact can be profound.