Just make sure you find a trustworthy partner who complements your skillset.  

Owning and operating a property management company is a huge complement to owning a real estate; owning a bookkeeping or CPA company that serves real estate investors; a construction company is another great example of a small business.Again not sure where you're heading with your question, so hard to give a precise advise. 

We determined that five houses, paid for, will complement military retirement.  

The way I approached it is by having a local vacation rental management company, I complement bookings the rental management company gets with my own advertisements.In the AZ area I went with a company called AwayLiving. 

While the two things can complement each other, I think the time spent getting your license would be better spent learning about the niche of  investing you want to pursue.I can see where if you're flipping houses it could be useful as the amount of purchases and sales will be higher than a "buy and hold" for example.I didn't pursue law so I could write my own will and legal documents.

For example, I'll look at and do deals anywhere in RI, especially as I have some business partners in south county, but for my buy-and-holds I personally stick to northern RI in the vicinity of Providence/Cranston/Warwick just because it's closer to me.Also if you haven't visited a local investing group in our area such as RIREIG (rireig.com) or Black Diamond REI (blackdiamondrei.com) I'd recommend that too as it's a nice complement to Bigger Pockets, meeting people face to face, hearing about the latest news in our markets, etc.And check out the BP podcasts too, they're always entertaining and informative :)

They can provide with caps you need or have other talents that complement you.  

When we make an offer, we include a full complement of documents and an earnest money check.

I felt this would complement my Construction Science coursework and home building experience. 

We were actively offering in the area on potential properties to be used as Airbnbs or other STR, & found this a stable property to complement our more risky endeavors.