Sorry, I missed the question above. It really depends on your strategy. IMHO, the only true form of "real estate investing" is buy and hold. Everything else, wholesaling, brokering, fix and flipping, developing, property management etc., is a real estate business. With RE investing, like investing in stocks, bonds, or CDs, you're putting you money in and hoping for a return. Unlike those others, if you invest in RE, you may well end up with a property management job that goes along with your investments.
The other types of "investing" are jobs. You turn the crank, money falls out. You stop turning, the money stops. Absolutely nothing wrong with that.
So which you choose to do will depend on your personal situation and goals. Its really tough to hold rental properties if you have no cash and no credit. Not impossible, but more risk and a lot more work. Some of the businesses, like wholesaling and brokering, require minimal initial cash. It will require time and some money to get a RE agent license, and either of these will require a significant investment of time before you can actually achieve a payday. Fix and flipping will require some money, but has at least the possibility of a much bigger payday. Developing requires a lot of money and knowledge. Property management, if you're doing it for someone else for pay, typically also requires a RE agent license.
As far as any particular property, its just a numbers game. Whether its a rental or a fix and flip, or a wholesale deal that leads to one or the other, you must look at the numbers. Rentals are typically lower priced. The price to rent ratio has to be in synch. Fix and flips can cover a much broader range. There are lots of threads here that go into the details of what works for each.
Depending on the strategy you choose, you need to find properties that support that strategy.