Need some info about asp.net core

i have few question on asp.net core.

1) suppose i have VS2013 so can start project based on asp.net core ?

2) which VS ide would require to start asp.net core project ?

3) how do i identity a project that it has been made with asp.net core ?

4) how could i start asp.net mvc 5 project with VS IDE 2015 ?

5) which IIS version would be required to run asp.net mvc core based project? IIS7 will work in this matter ?

6) how to convert a asp.net core mvc project to old mvc 5 project with VS IDE 2015 ?

please answer points wise. thanks