New Investor- Looking for advise on Education

Hello, BiggerPockets community.

I am a new investor who is primarily currently interested in syndication/ passive income deals. I love my job and currently do not want to leave it- maybe in the future. I have done one syndication deal ( I am an accreditor investor) a few months ago but I felt I have done the deal mostly because I loved the people who manage it, the goal they are trying to do, the deal felt really close to my heart-  not because of the cold numbers and mathematical reasoning. 

Saying this,  I start educating myself more about the syndication world - read a couple of books that helped a lot and listen to some podcasters last two months. I would like to invest more in the future but this time would like to base my decisions on actual numbering and due diligence, recommendations.

I would really appreciate any help if someone can help to point me in the right direction on how to pick wisely an investment opportunity:  books to read, online courses, mentorships on how to do due diligence, what to look for, red flags, gotchas and etc.

Any help would be appreciated.

Thank you!