First of all you have to do a research of the company you want to invest in. After founding a good company you have to find a good project to invest in. You must know a right time to start your investment . You must know how long does your investment is going to take. Read more information about different types of investment. Take the best option that suits your income. Don't take all your money and put it in investment. Save money for your children school fees and universities fees. Start when they are still young . Do the follow up and update your information with a company if something change. If you want to have extra income start to invest. If you want better future for your kinds you must start now.
Java game development framework
Developing a cross-platform Java game framework based on OpenGL for Windows