I'm learning Esperanto using Duolingo and am a total beginner, so sorry if the questions sound silly. (_Mi estas komencanto!_) I have a bit of a doubt in the following two points:
 
 - Are *Kiel vi fartas?* and *Kiel fartas vi?* both correct? If not, which is, and why?
 
 - Are the following sentences equivalent? *Nedankinde, kara!* , *Vi estas bonvena, kara!* and *Bonvenon, kara!*
P.S.: Is it wrong to say, *Vi estas bonvenon, kara!* 
     
**Dankon!**