Brrrr advice for 23 year old

[Austin Vanderweide]

Looking for tips on brrrr. I get the concept. Have done it twice myself. Looking for financing strategies, and ways to save money on deals. One I stumbled across today was using a line of credit instead of a mortgage and then taking out a mortgage after rehab to avoid paying origination fees on two mortgages and reducing closing costs. Any other tips would be appreciated