react navigation tab navigator with examples

Описание: in this tutorial you will learn :
1- what is the tab navigator as a type of react navigation?
2- how to use it with minimal example?
3- how to change the tab bar navigation appearance by changing the style,iconbar and add some options?
4- how to change the position for the tab bar from the top to the bottom?
5-what is the difference between stack navigator and tab navigator?
6- how to integrate between stack navigator and tab navigator?
and in the end of the tutorial you have a quiz to answer to insure that you understand this tutorial well