Good Morning
Can someone please answer these few questions :

1) Is it possible to convert easily the source code of softwares written with VB2008 into VB2015 ?
2) Is it possible to make with VB 2015 exe files redistributable ?
3) Is it possible to install in a computer (W10) both versions VB2010 and VB2015 ?
4) Is there a free version of VB 2015 ?
Many thanks.