A question about game development

[oux]

Hello,

I always wanted to make my own computer games, but there is always something to do, no time etc.
So I decided to ask here, if you don't mind:
1. Where do I start? I read that 95% of games are written in C++ language, so I have to learn it first?
2. How much time does the game developement consume?
3. Is it possible to make a game such Zombasite as one person?