. - Connects you with a community of other trainees and gives you access to a discussion board with a couple of years worth of archived questions and responses. - The deal calculator provided is super solid.

Typically these are not "taught" but lessons learned from experience. 

Worth. 

This is typically seen in larger transactions with bigger check sizes but is also complicated to originate because an intercreditor agreement will be required by your lender.

Is it really worth it for the purpose of finding and buying Multifamily deals ?

Look, smaller properties typically don't create massive amounts of cash flow in the early years. 

However, with high confidence my old property will sell quickly in my current local market it is well worth getting into the next property quickly if the numbers make sense based off the new mortgage.

Worth every cent of your attorneys fees!!

If your teammates and colleagues are aware of your contribution they should understand that they need to step up upon your exit or make it worth it for you to continue for them. 

Looks like you're in great company, your dad may be able to help you avoid some of the typical stumbling blocks that new investors encounter.