There is no right or wrong...just what works for both parties...

I'll pay closing (no realtors involved, I'll get an attorney).

I am spending a few thousand for 4th of July party because it is one of my favorite holidays.

We need the trust documents which were sent to the other party that owns partial of the property.

It involves real estate and you do have to invest money. 

It’s not because of free hotdogs at a resident appreciation party, or measly referral credits.

The timing has to be right for BOTH you and the market you are looking to be involved in and the numbers on a specific deal have to ultimately make financial sense.  

The situation you have described above does not involve either securities or people with no prior relationship.

I wouldn't get involved.

if your a beginner highly unlikely your going to get Zero money down deals.. there will be some closing cost some cost involved.. you should work on some kish up front then go shopping.. nothing spells failure quicker than under funded.