You can do this, however it then requires that you disclose the fact that you hold an RE license to a seller, when you are going to buy a property for your own use such as for a rental. You then need to make sure everything is very much above-board in your dealings, so there's no backlash (lawsuits) saying you took advantage of the seller due to (assumed) advanced knowledge.
You also will have to work a period of time under an actual BROKER, so you need to get that arranged, and to realize that broker actually makes all the legally binding decisions (since he'll be held accountable for them). He also gets (is entitled) a percentage of any commission. Say said commission on any particular property is a total of 7 percent. Well, the listing agent gets a cut, the brokerage gets a cut, the selling and buying agents get a cut, pretty soon it's not nearly as much as you might think...
I know investors that got their license, realized using it might not be in their best interests, and then held them in escrow instead.