Learn Turkish: Bununla ilgili yeni bir tarife var mı? - Is there a new timetable related to this?

When combining the postposition ile (with) with the demonstrative pronouns bu, şu, or o, you must use the genitive base form of the pronoun. So, bu becomes bunun, and attaching ile (which shortens to -la/-le) gives you bununla. Paired with ilgili, the phrase bununla ilgili means "related to this" or "about this."

Could I use bunun hakkında or buna dair instead of bununla ilgili here?

Yes, you can! They are mostly interchangeable here. Bunun hakkında translates closely to "about this." Buna dair is slightly more formal but means the same thing. Just pay attention to the case endings taught in this lesson: hakkında requires the genitive (bunun), ilgili requires ile (bununla), and dair requires the dative (buna).

I thought tarife meant "recipe" or a "pricing plan". Can it also mean "timetable"?

Yes! While tarife is very commonly used for cooking recipes (yemek tarifi) or mobile phone plans, it is also the standard word for a fixed timetable or schedule, especially for public transit like buses, trains, or ferries.