The whole thing is not beginner friendly….  

@Kwanza P.Here you can learn more about non-recourse loans:https://www.biggerpockets.com/member-blogs/2810/46115-real-e...Here is a list of lenders offering non-recourse financing to Solo 401k:https://www.biggerpockets.com/member-blogs/2810/50272-list-o...You protect your property by purchasing insurance. 

Eventually I went to investment property (local purchase) and vacation home (2 out of state purchases).

@Wade Wisner -  Most of the notes that we purchase we keep in our portfolio and borrow against them with private capital.

As a foreign investor, I can get financing up to 80% for the purchase of real estate, so the biggest problem for a more serious project is down payment if you have a solution for down payment, please suggest me. 

Purchase price: $120,000 Cash invested: $150,000 Dilapidated house.

This implies that if I had confidence of better than normal appreciation or ways to add value, I would purchase a negative cash flow property.  

Quote from @Jeffrey Bourque: ARV $350,000 - $400,000 3bd 1 bath 800sqft estimate rehab $70,000 purchase price $200,000What are your thoughts and should I do it? 

Sadly, I might have to wait until early 2025 for #5, as my funds have dwindled from purchasing 1-4.

My first multifamily purchase was my 34th acquisition and my first multifamily syndication was my 103rd acquisition (and wasn't my second multifamily purchase, either).