What is venture capital or venture investing and how it works?, if somebody has experience in this field please share your opinion.
Put simply it's a way of raising funds for a start up. People who have an idea but do not have the funds to develop or pursue it will go an pitch this idea to venture capitalists. If they believe the idea is of merit they will stake their own money in return for something (normally a share in the business). They may often also offer their guidance and counsel.
https://en.wikipedia.org/wiki/Venture_capitalRead wikipedia if you want to know more in detail.