In real estate, you can decide to either buy properties and sell them as they are, or buy property, develop it and rent out or sell it as it is. A real estate agent or financial advisor is best placed to advise you on this, as this choice is dependent on very many factors.
In these days, buy fix rent. It's a longer road and a bitch to say the least. The days of flipping are over due to the saturation of foreclosures. Buy land, no need but to sit and wait for it to mature