CSLA n Xamarin

Hi..

hello Rocky..

The last version of CSLA I used is 4.3.12

If I have a plan to learn to write android or ios use xamarin for my CSLA.

my questions are :

1. which version I have to used ?

2. what xamarin tools I have to used ? xamarin studio or xamarin for visual studio.

thanks a lot & God Bless...

stefanus