Stargazing can be frustrating. The vast sea of stars that make up our night sky seems bewildering unless you know your way around. Yet picking out a few stars doesn't have to be complicated. In fact, with a good sky map and no other equipment, you can begin to learn the sky tonight.

Experienced skywatchers use maps, too, and they say the one of the keys to enjoyable stargazing is to get to know the constellations and the stars within them.

In Week 1 of Starry Night's Fall Sky Tour, we scanned the fall skies for easy-to-find objects. During Week 2, SPACE.com's backyard astronomy columnist Joe Rao revealed some less celebrated and more challenging nighttime targets.

To finish the tour, Joe explains how you can easily find an elusive target, Mercury in the Morning.

Throughout the Fall Sky Tour, our tour guide is the newest version of Starry Night Pro, the premier software for backyard astronomy.

If you're just joining the tour or want some easy targets, look north, south, east or west for some of the brightest stars and learn what mythical creatures they're associated with. These constellations -- always abstract -- represent the musings of farmers, poets and philosophers over thousands of years. Nowadays they're useful in organizing the sky.

There are now 88 official constellations, whose boundaries were defined several decades ago by the International Astronomical Union.