Learn Turkish: Kitap çok ilginç. Film biraz sıkıcı. - The book is very interesting. The movie is a little boring.

Yes! Just like in English, degree words like çok (very) and biraz (a little) are placed directly in front of the adjective they are describing. So we say çok ilginç (very interesting) and biraz sıkıcı (a little boring).

Does çok mean 'very' or 'a lot'?

It can mean both, depending on what follows it! Because it is placed before an adjective (ilginç) in this sentence, it translates to 'very'. If you place it before a noun, like çok kitap, it translates to 'a lot of' or 'many' (a lot of books).

Where is the word for 'is' in these sentences?

There isn't one! In Turkish, when you are describing 'he', 'she', or 'it' (the third person), you usually don't need a verb to say 'is'. Simply putting the subject and the adjective together—like Kitap çok ilginç—makes a complete sentence meaning 'The book is very interesting.'

Why does the English translation use 'The' if there is no word for it in the Turkish sentence?

Turkish does not have a separate word for 'the'. The word kitap can mean 'a book', 'books' (in general), or 'the book'. You figure out which one is meant from the context. Here, the speaker is clearly giving an opinion on a specific book and movie they watched, so 'the' is the most natural English translation.