Learn Turkish: Evde bin kitap var. - There are a thousand books at home.

In Turkish, the word that expresses existence (var for 'there is/are' or yok for 'there is not/are not') almost always goes at the very end of the sentence. The place where something exists, like evde, usually goes at the beginning.

Why is it kitap instead of the plural kitaplar when there are a thousand of them?

In Turkish, when you use a specific number before a noun (like bin), the noun always stays in its singular form. So you say bin kitap (thousand book) instead of bin kitaplar.

Does bin just mean 'thousand' or 'a thousand'?

It means both! In English we say 'a thousand' or 'one thousand', but in Turkish you do not need to add the word bir (one/a) before hundred (yüz) or thousand (bin). You just say bin kitap.

How does evde translate to 'at home'?

The word ev means house or home. The suffix -de means 'in', 'on', or 'at'. When you attach it to the end of a word, evde becomes 'at home' or 'in the house'.