June 21 may be the first official day of summer. But for most of us, summer begins the minute we stand before the full-length mirror in last year's bathing suit. Whether winter has left you with excess pounds or workout apathy, our Essential Guide has the expert info you need to shape up fast. To lose weight and eat smart, see "10 Steps to Sure-Fire Weight Loss." Then relax, recharge and expand your universe using our well-being tips. Whether you get your feet wet with a new water sport or set up a telescope and aim for the stars, we want this to be your best summer ever!