There are 3 courses that have recently come to my attention about tax lien certificates and tax default properties either from others on this forum or from other real estate investors I know.1) https://www.taxsaleacademy.com/2) https://tedthomas.com/3) https://taxlienacademy.com/I think all 3 courses range from $1500 - $2000. 

I personally think it's a smarter model than the big box right now, but you will get more real life training at a big box.

Welcome to the site!

I was thinking about buying the home but not sure on the best strategy. 1.

I think the benefit of a mini split system over a central are the energy efficiency the offer, the individual control over zone cooling/heating, simpler maintenance, quite operation.In the end it comes down to what makes sense in your situation, but I will say that there is a lot of fear mongering among a lot of HVAC companies to push people to either central systems or if they do mini splits, then into the higher priced systems. 

Sponsor is regularly seen on-site at every property in their portfolio, regardless of personal cost. 

Just because it's a primary residence for him doesn't automatically exempt your portion from capital gains—you're still considered an investor.You also need to think about what happens if your friend can’t buy you out or if your relationship changes.

What do you think?

Alternatively, there are a few sites out there that can give you an estimate - but what I've found is that these have been highly unreliable (even Propstream). 

A bank will not go above 75% typically so you have no ability to borrower or maybe get out $20kIn this environment with high prices and rates - I personally don’t think it makes sense to borrower for a down payment as you are just over leveraging with multiple sources of loans.