Purchasing a car out of state: taxes/fees/registration

I'm looking at buyng a used car and have found a few out of state. How exactly are the following types of things handled (my assumptions in parentheses)?

Title (just go to title transfer place transfer there)
Insurance (I call in the vin to my insurer and I'm done)
License plate (??? How do I drive it home)
Taxes (pay in my parish when I register it (state and parish only or federal too))
Any other fees or things (costs) I need to consider?