If you want a good program for finding stars and planets,”My Stars” is a great star chart program. Costs about 20 bucks and can be found on the Internet at http://www.relativedata.com/mystars. I tried to make a link but for some reason it kept telling me it couldn’t go there. However, that is the correct URL and will get you there if you cut and paste. I use my copy to find where the planets and stars are before I take my little 6 inch reflector out in the yard. You can get a free version but it doesn’t show everything as the registered one does.

CRAB Nebula-DSS-20x150s-flats-darks-exp50min
I shot this image of the the Crab, M-1 Nebula not to long ago from my backyard.
M1 is the remnant of a star that exploded as a supernova which was observed in ancient times around 1054, by the Chinese.
A friend of mine has an app on his phone with a celestial atlas that shows stars and constellations in whatever direction you point the phone (as if taking a picture). Very neat (and works in the daytime too! ;-)). It uses GPS and g-force (tilt sensor) data to calculate the coordinates and display the information.