It is hard and will be a full time time job to do it right. 

If there's enough duplexes that it's likely you find one you like in a reasonable amount of time (less than a year), then start looking at them in your preferred area.

I want to purchase my sisters house as my first investment.

In a way I am a "long time listener, first time caller" jumping into the forums here.

Quote from @Laura Nelson: I went last year for the first time, and it was a blast! 

Hey man, congrats on the first deal! 

I recently started with a new company that is paying for my housing, vehicle, and fuel.

Quote from @Dominic Mazzarella: I would ask this, when raising capital for a real estate syndication, what strategies have you found most effective for building trust and credibility with first-time passive investors?

Which area did you buy your first property in? 

I've done corporate relo a handful of times.