Real Estate License before starting?

[Corey Samuelson]

So I plan to start out by house hacking and buying a Duplex or maybe even Triplex of Fourplex.

My questions are: Is it a good idea to get my Real Estate License first? 

Also, I noticed when reading up that there seems to be two different licenses. A Sales and a Broker license. 

Which one should I go for if I plan to become a serious investor?

Are there any California investors here who can give input on where I should go to get my license?

Can it be done online?

I should also mention I'm from Southern California. Which is where I will probably end up buying.

Thanks in advance.