I have listened to a podcasts with other doctors talking about this, Anywhere else I can find info or advice or strategies on similar situations?

I've been using the MLS, but I like the idea of talking to neighbors to see if they’re interested in selling—or at least getting on their radar.

I talked to my property manager that manages a number of straight rentals for us and she was not familiar with  Pad Split. 

Ive talked to a few folks currently building but ive heard ranges from $100-$125.

Have been talking about getting into real estate investing for the last 2-3 years and finally pulled the trigger on a 3 unit house hack in Soulard that will be closing later this month and will be self-managing the property.I'm trying to network a bit with other investors, build a solid team of contractors / handymen, and set my systems up in way to scale, but also so my tenants have a good experience.

I wouldn't talk to people who are investing far away  that's just my 2 cents.

Good question - when Bigger Pockets leads reach out to us via out of state, we first define your specific goal with the BRRRR and talk through specific cities/areas that could lend itself to accomplishing that goal.

You are using both tax sale and mortgage foreclosure in your posts, so I can understand why this post went unanswered for so long.If we are talking the upset tax sale, the simple answer is that the liens remain in place.If we are talking judicial tax sale, the simple answer is that the liens will be divested (at least for those where proper service of the notice of tax sale was properly delivered to the lien holders).Which leaves mortgage foreclosure.

Wherever you took your broker's class you should have ample study materials.If you are talking about your real estate agent's license in NJ (that is not a broker's license), you need to take the initial class at an accredited agency and they will give you all of the materials after you finish the 75 hours for the test. 

This should have been talked about or done MONTHS AGO.