I never use VPN service, so my question can be stupid for you, but for me is very important one thing:
1) When I have installed your service can i change my IP as i want - i mean: can i choose place or region from where my IP is coming?
The answer of your question is yes. Because that is the primary purpose why VPN is made. But it depends from what kind of VPN you are using because there are free VPN that only have limited country. But if the VPN is a pro version I guess you can choose different country all over the world, if you want from india's ip address you can choose the india as your country in that VPN service you can hide your IP address and you can browse different site if its block from your ISP.