It is much better to take lots of pictures, ideally with different exposures, and review the results when you have the time. Digital images record the shutter speed at the time of the exposure and most imaging software will show you this information (along with aperture, ISO setting and other data). Learn from what works so that setting your camera correctly comes naturally.
Enter the Gallery
There is action happening all around us and opportunities to capture it with great photos. Use the advice in this tutorial, take some great photos, then enter your favourite in the Gallery. Next month your photo could be displayed as one of the best!