Can we (a married couple living together in B as primary residence and filing jointly) get 90% of that 500K profit tax free (only 90% because we rented it for 1/10 of the time).What happens with the 500K profit from property A?

We just don’t feel that a property manager will ever genuinely care about property like you would.

Tenants are jointly and severally liable for the full rent amount, so the "paying tenant" also has a responsibility to ensure the entire amount is paid.

I will be going with a joint VA Loan with a fellow veteran so we intend on combining our entitlement and searching for 6 unit buildings. 

Find a deal to wholesale but joint venture with a wholesaler to walk you through the process.

If you build a solid base through reading some of the BP books and listening to the podcast, and then make a genuine effort to reach out to agents, lenders, other investors etc, then in my mind you'll have the foundation for a successful real estate investing career. 

Same concept as a married person filing separately in 2018  and jointly in 2019

If there is more than one Tenant, you are jointly and severally liable for any liability to us.

In NJ if a joint venture deal is entered into and one of the projects goes south the party who takes that loss can hold proceeds from another deal as right of offset for that loss.

I genuinely can't tell if this is a joke or not.