What business will be best to get more money within less time span and which involves less risk?
Less risk simply translates to less money invested and therefore less return. Share or equity trading has a lower risk than most other businesses, but it doesn't make as much, unless you will be trading large numbers of shares.
The higher the risk, the better the return!!! If it was easy, everyone would be doing it! There are no short cuts in life!! You're going to have to earn it!!