Keep half as a cash emergency reserve, you'll need it trust me.
Other half, keep some to start an IM business if that's what you want, but try to spend the least possible and to learn and make it work without the money. If you can make money with 50usd, then you can start investing when you're sure things work.
The rest can be invested in bonds or mutual funds with the help of your bank. So you'll make money while you're learning to make money.