This platform on Bigger Pockets is a great source of information where you can ask questions and also learn from other investor questions.

Quote from @John Mason: I do not use either so cannot comment but I am sure you have a  great judge on it:) Thank you for the help

Those who have invested I am sure can chime in. 

For property management, I am personally a fan of managing your first property (with proper education or mentorship before beginning) since this is where you will learn first hand what is required in managing a tenant.

Flipping homes in San Diego has been an incredible journey, and over the years, we’ve learned a lot about what works—and what doesn’t—in this market.

Make sure it makes sense. 

Lessons learned?

You can hear real-world examples of how others have built their investment portfolio and (hopefully) learn to avoid their mistakes.4.

What specifically are you wanting to learn?

Sure, one can neglect these.