Spear's comments about required capital improvements as they relate to rent increases and a captive audience/ trailer trash mentality. 

Im considering it as the course includes a coach for 6 months and a complete program.

Make sure you connect with the NHREIA, great group, they have monthly meetings in Manchester and a busy FB group with 3500+ members.

Further, running a very quick and simple valuation based on $900 rents, 8% vacancy, 25% op exp margin, and a 9% cap rate, I'm coming up with an ARV of around $83k, so I'd pass if I were you unless you can get a much lower purchase price.

Yes, I have done that several times, both as a buyer and as a seller.

Conventional financing requires that you have a SSN, Permanent Residency in the US, and a US credit score. 

For example, two of my goals are to achieve a certain percentage for my IRR (internal rate of return), and a certain % for my cash on cash return. 

I've also used traditional loans through regional banks and a few SBA loans. 

as a flipper, with the participation of a wholesaler and a hard money lender, what actions should I take BEFORE I close and buy a house (tell me step by step please because i dont really understand the sequence of events) and also please tell me when to do due diligence to make sure how much does it cost to renovate the house and is it worth buying this house?

It’s an interesting approach, but ensuring a strong screening process and a legally solid agreement is key.