Do the math early in your journey to keep you from going down the wrong road for 10 yrs before you figure out that the vehicle was not the best one for the task.  

I also have heard of a another specific form of syndication called a real estate limited partnership. does anyone have experience using either of these vehicles and if so would you say they are beneficial to investors?

The meantime I am learning and exploring other real estate investment vehicles (wholesaling, rehabbing, etc).

High yield is relative to opportunity cost(other investment vehicles like money market/stocks etc).

I have been reading up alot in real esate and trying to decide which lane/vehicle is best for me.

My goal is to make real estate my primary investment vehicle.

This book was truly inspirational and left me hungry for a deeper knowledge of real estate as an investment vehicle.  

I would suggest your decision to join a REIA is similar to buying a new vehicle.

I am strongly considering opening a Self Administered, Self Directed i401k so that one of the investment vehicles can be - you guessed it - real estate notes and mortgages.With that said, I don't want to preclude myself from having a brokerage account to hold cash and hopefully earn some money in the stock market when I don't have the money lent in real estate.My question is this:  Do the brokerages (IE: Fidelity, etc), understand this arrangement?  

I would suggest your decision to join a REIA is similar to buying a new vehicle.