When you start or you are familiar with stars and planets, a great help is the
Ster 3D+ app in the App-store.
You can look up every star, planets, star signs, the Sun and Moon, also the Moons of other planets, comets and the ISS etc. Just a few clicks and you can see the chosen object in the sky and you get all the data you need.
It is very easy to use and a great help. The price is about € 3,75 and for € 2,— more you get thousands of stars extra.
An absolute must.
Here a few examples. Enjoy it!