Learn Turkish: Bu kitabı eve götür.

Two things are happening here! First, because you are taking a specific book, we add the accusative case ending -ı to mark it as the direct object. Second, when we add a vowel ending to kitap, the hard p changes to a softer b to make it easier to say. So, kitap becomes kitabı.

Why is it eve instead of just ev?

The word ev means house or home. The -e ending is the dative case, which shows movement towards a place. It acts like the English word to. So, eve literally means to the house or to home.

I thought the verb for take was al. Why does this sentence use götür?

In Turkish, the verb almak is used when you are receiving, buying, or picking something up. However, when you are taking or transporting something away from yourself to another location, like taking a book to a house, you must use götürmek.

Why doesn't the verb have an ending like götürüyorsun?

This sentence is a direct command or request, which is called the imperative form. To tell one person to do something informally in Turkish, you just use the bare root of the verb without any extra time or person endings. The root of götürmek is simply götür.