This. If you want to read Dostoevsky novels, read in this order>Notes from the Underground (really short book)>Crime and Punishment>The Idiot>Demons (Optional)>The Brothers Karamazov
There's only two (good) Tolstoy novels, so read either.
Other good Russian novels are Dead Souls, Father and Sons, and Oblomov.
I could recommend you short stories too.