House flipping is very much a profitable business at a lower risk. If you have a good amount of capital and basic knowledge about the property, then it can be a good career opportunity for you.
Flipping houses used to be a big thing. The strategy involves buying a piece of real estate and then selling it at a reasonable profit. Granted, that's when housing as a business was fairly healthy. Now, however, it it's been ill for a while, more people are flipping properties again. In either case, a good bit of care is normally exercised to avoid and or minimize taxes.