I am torn between buying old duplexes or doing new build duplexes. 

As you continue to work with them, you'll build a relationship with them, and they'll send you these leads before everyone else.

You need to start building credit.

If you can act fast, build quality remodels on time that sell you become a good choice for them.

Was trying to find a mentor to build new construction but prolly dont want to do that with so much uncertainty in the markets. 

If rehabbed did you check to see if they pulled required building permits ? 

At the end of 2023, I purchased an empty lot to build a single-family unit, that I plan to live in for at least 1 year (rent or sell in 2025).

Here are some favorites among real estate investors:"Set for Life: Dominate Life, Money, and the American Dream" by Scott Trench: While not solely focused on house hacking, this book offers practical advice on building wealth through real estate investing, including house hacking strategies."

It all depends on Code compliance at that particular building.

There are multi million dollar companies that have arisen to build SEO.