If you just want the knowledge, sure, take the online classes and tests.

I typically use regional banks to fund my deals but my 2 go-to banks have either slowed or fully stopped investment loans so recently I've connected with several online brokers but all came from ads or they reached out to me vs personal recommendations and intros so I have concerns. 

Also, access to online HMLs is compressing the total returns as the market gets more efficient.

The more people you meet, the greater chance you will find new cash buyers.Online Lead Capture FormAnother way to find cash buyers is through online lead forms.

Online title search companies.

The online reviews are spotty.

Also from what I've read online breaking into the insurance side of things sounds like it requires cold calling and building relationships with those reps vs just registering property in database and waiting.

Check out other online guides available here: https://www.biggerpockets.com/guides3.

The younger generation now sees that money can be made remote and by influencing or other things online, but it doesn't make you lendable (and most quit each thing every four months so never get the two years they need as 1099).

I personally use propwire.com for residential lists but you can get them online from tons of places.