New Prius Owner

What do yall think? Due to enexpected circumstances, I bought a 2015 prius from a dealership near me and this was all they had to get me in so I had to take it like it was.

Thus it's got a lot of work to do mostly on the inside as the prior owner seems to have been a smoker (I'll post more pictures later). So any ideas for the best way to clean out the car? Or just tips I should know in general being a new car owner. Thank you!