While I started with arbitrage in 2016 I no longer find it to be a viable strategy, or at least it is finding a needle in a haystack.

Focus on understanding financing options like FHA, conventional, or creative strategies, and practice analyzing deals to build confidence.

He is versed in all things REI and was even a guest speaker at the local REI meet-up a month or so ago about all the different options he can offer.

It helps estimate ARV, rehab costs, and potential returns and offers funding options.

Or if they would prefer a lease option? 

Worse case I just continue to manufacture them through my fix-n-flip business and buy with seller financing where available.Also, is tax lien investing really viable today? 

It's important to communicate with your lender as soon as possible to discuss your options.

To the point above, then there would be comps and BRRRR may be viable for the third and subsequent properties in the same market.   

Self-education and finding a mentor or partner to learn from are much better options.

Loads of information on the forums and BP tools for you to expand your knowledge or find just about anything.I am on the lending side of things and am always happy to talk shop with investors looking to learn more about financing options out there, even if not in my resource pool.